// Copyright (C) 1999-2000 Id Software, Inc. // // bg_lib,c -- standard C library replacement routines used by code // compiled for the virtual machine /* * Portions Copyright (C) 2000-2001 Tim Angus * * This program is free software; you can redistribute it and/or modify it * under the terms of the OSML - Open Source Modification License v1.0 as * described in the file COPYING which is distributed with this source * code. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. */ #include "q_shared.h" /*- * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #if defined(LIBC_SCCS) && !defined(lint) #if 0 static char sccsid[] = "@(#)qsort.c 8.1 (Berkeley) 6/4/93"; #endif static const char rcsid[] = "$Id$"; #endif /* LIBC_SCCS and not lint */ // bk001127 - needed for DLL's #if !defined( Q3_VM ) typedef int cmp_t(const void *, const void *); #endif static char* med3(char *, char *, char *, cmp_t *); static void swapfunc(char *, char *, int, int); #ifndef min #define min(a, b) (a) < (b) ? a : b #endif /* * Qsort routine from Bentley & McIlroy's "Engineering a Sort Function". */ #define swapcode(TYPE, parmi, parmj, n) { \ long i = (n) / sizeof (TYPE); \ register TYPE *pi = (TYPE *) (parmi); \ register TYPE *pj = (TYPE *) (parmj); \ do { \ register TYPE t = *pi; \ *pi++ = *pj; \ *pj++ = t; \ } while (--i > 0); \ } #define SWAPINIT(a, es) swaptype = ((char *)a - (char *)0) % sizeof(long) || \ es % sizeof(long) ? 2 : es == sizeof(long)? 0 : 1; static void swapfunc(a, b, n, swaptype) char *a, *b; int n, swaptype; { if(swaptype <= 1) swapcode(long, a, b, n) else swapcode(char, a, b, n) } #define swap(a, b) \ if (swaptype == 0) { \ long t = *(long *)(a); \ *(long *)(a) = *(long *)(b); \ *(long *)(b) = t; \ } else \ swapfunc(a, b, es, swaptype) #define vecswap(a, b, n) if ((n) > 0) swapfunc(a, b, n, swaptype) static char * med3(a, b, c, cmp) char *a, *b, *c; cmp_t *cmp; { return cmp(a, b) < 0 ? (cmp(b, c) < 0 ? b : (cmp(a, c) < 0 ? c : a )) :(cmp(b, c) > 0 ? b : (cmp(a, c) < 0 ? a : c )); } void qsort(a, n, es, cmp) void *a; size_t n, es; cmp_t *cmp; { char *pa, *pb, *pc, *pd, *pl, *pm, *pn; int d, r, swaptype, swap_cnt; loop: SWAPINIT(a, es); swap_cnt = 0; if (n < 7) { for (pm = (char *)a + es; pm < (char *)a + n * es; pm += es) for (pl = pm; pl > (char *)a && cmp(pl - es, pl) > 0; pl -= es) swap(pl, pl - es); return; } pm = (char *)a + (n / 2) * es; if (n > 7) { pl = a; pn = (char *)a + (n - 1) * es; if (n > 40) { d = (n / 8) * es; pl = med3(pl, pl + d, pl + 2 * d, cmp); pm = med3(pm - d, pm, pm + d, cmp); pn = med3(pn - 2 * d, pn - d, pn, cmp); } pm = med3(pl, pm, pn, cmp); } swap(a, pm); pa = pb = (char *)a + es; pc = pd = (char *)a + (n - 1) * es; for (;;) { while (pb <= pc && (r = cmp(pb, a)) <= 0) { if (r == 0) { swap_cnt = 1; swap(pa, pb); pa += es; } pb += es; } while (pb <= pc && (r = cmp(pc, a)) >= 0) { if (r == 0) { swap_cnt = 1; swap(pc, pd); pd -= es; } pc -= es; } if (pb > pc) break; swap(pb, pc); swap_cnt = 1; pb += es; pc -= es; } if (swap_cnt == 0) { /* Switch to insertion sort */ for (pm = (char *)a + es; pm < (char *)a + n * es; pm += es) for (pl = pm; pl > (char *)a && cmp(pl - es, pl) > 0; pl -= es) swap(pl, pl - es); return; } pn = (char *)a + n * es; r = min(pa - (char *)a, pb - pa); vecswap(a, pb - r, r); r = min(pd - pc, pn - pd - es); vecswap(pb, pn - r, r); if ((r = pb - pa) > es) qsort(a, r / es, es, cmp); if ((r = pd - pc) > es) { /* Iterate rather than recurse to save stack space */ a = pn - r; n = r / es; goto loop; } /* qsort(pn - r, r / es, es, cmp);*/ } //================================================================================== // this file is excluded from release builds because of intrinsics // bk001211 - gcc errors on compiling strcpy: parse error before `__extension__' #if defined ( Q3_VM ) size_t strlen( const char *string ) { const char *s; s = string; while( *s ) s++; return s - string; } char *strcat( char *strDestination, const char *strSource ) { char *s; s = strDestination; while( *s ) s++; while( *strSource ) *s++ = *strSource++; *s = 0; return strDestination; } char *strcpy( char *strDestination, const char *strSource ) { char *s; s = strDestination; while( *strSource ) *s++ = *strSource++; *s = 0; return strDestination; } int strcmp( const char *string1, const char *string2 ) { while( *string1 == *string2 && *string1 && *string2 ) { string1++; string2++; } return *string1 - *string2; } //TA: char *strrchr( const char *string, int c ) { int i, length = strlen( string ); char *p; for( i = length - 1; i >= 0; i-- ) { p = (char *)&string[ i ]; if( *p == c ) return (char *)p; } return (char *)0; } char *strchr( const char *string, int c ) { while( *string ) { if( *string == c ) return ( char * )string; string++; } return (char *)0; } char *strstr( const char *string, const char *strCharSet ) { while( *string ) { int i; for( i = 0; strCharSet[ i ]; i++ ) { if( string[ i ] != strCharSet[ i ] ) break; } if( !strCharSet[ i ] ) return (char *)string; string++; } return (char *)0; } #endif // bk001211 // bk001120 - presumably needed for Mac //#if !defined(_MSC_VER) && !defined(__linux__) // bk001127 - undid undo #if defined ( Q3_VM ) int tolower( int c ) { if( c >= 'A' && c <= 'Z' ) c += 'a' - 'A'; return c; } int toupper( int c ) { if( c >= 'a' && c <= 'z' ) c += 'A' - 'a'; return c; } #endif //#ifndef _MSC_VER void *memmove( void *dest, const void *src, size_t count ) { int i; if( dest > src ) { for( i = count - 1; i >= 0; i-- ) ( (char *)dest )[ i ] = ( (char *)src )[ i ]; } else { for( i = 0; i < count; i++ ) ( (char *)dest )[ i ] = ( (char *)src )[ i ]; } return dest; } #if 0 double floor( double x ) { return (int)(x + 0x40000000) - 0x40000000; } void *memset( void *dest, int c, size_t count ) { while ( count-- ) { ((char *)dest)[count] = c; } return dest; } void *memcpy( void *dest, const void *src, size_t count ) { while ( count-- ) { ((char *)dest)[count] = ((char *)src)[count]; } return dest; } char *strncpy( char *strDest, const char *strSource, size_t count ) { char *s; s = strDest; while ( *strSource && count ) { *s++ = *strSource++; count--; } while ( count-- ) { *s++ = 0; } return strDest; } double sqrt( double x ) { float y; float delta; float maxError; if ( x <= 0 ) { return 0; } // initial guess y = x / 2; // refine maxError = x * 0.001; do { delta = ( y * y ) - x; y -= delta / ( 2 * y ); } while ( delta > maxError || delta < -maxError ); return y; } float sintable[1024] = { 0.000000,0.001534,0.003068,0.004602,0.006136,0.007670,0.009204,0.010738, 0.012272,0.013805,0.015339,0.016873,0.018407,0.019940,0.021474,0.023008, 0.024541,0.026075,0.027608,0.029142,0.030675,0.032208,0.033741,0.035274, 0.036807,0.038340,0.039873,0.041406,0.042938,0.044471,0.046003,0.047535, 0.049068,0.050600,0.052132,0.053664,0.055195,0.056727,0.058258,0.059790, 0.061321,0.062852,0.064383,0.065913,0.067444,0.068974,0.070505,0.072035, 0.073565,0.075094,0.076624,0.078153,0.079682,0.081211,0.082740,0.084269, 0.085797,0.087326,0.088854,0.090381,0.091909,0.093436,0.094963,0.096490, 0.098017,0.099544,0.101070,0.102596,0.104122,0.105647,0.107172,0.108697, 0.110222,0.111747,0.113271,0.114795,0.116319,0.117842,0.119365,0.120888, 0.122411,0.123933,0.125455,0.126977,0.128498,0.130019,0.131540,0.133061, 0.134581,0.136101,0.137620,0.139139,0.140658,0.142177,0.143695,0.145213, 0.146730,0.148248,0.149765,0.151281,0.152797,0.154313,0.155828,0.157343, 0.158858,0.160372,0.161886,0.163400,0.164913,0.166426,0.167938,0.169450, 0.170962,0.172473,0.173984,0.175494,0.177004,0.178514,0.180023,0.181532, 0.183040,0.184548,0.186055,0.187562,0.189069,0.190575,0.192080,0.193586, 0.195090,0.196595,0.198098,0.199602,0.201105,0.202607,0.204109,0.205610, 0.207111,0.208612,0.210112,0.211611,0.213110,0.214609,0.216107,0.217604, 0.219101,0.220598,0.222094,0.223589,0.225084,0.226578,0.228072,0.229565, 0.231058,0.232550,0.234042,0.235533,0.237024,0.238514,0.240003,0.241492, 0.242980,0.244468,0.245955,0.247442,0.248928,0.250413,0.251898,0.253382, 0.254866,0.256349,0.257831,0.259313,0.260794,0.262275,0.263755,0.265234, 0.266713,0.268191,0.269668,0.271145,0.272621,0.274097,0.275572,0.277046, 0.278520,0.279993,0.281465,0.282937,0.284408,0.285878,0.287347,0.288816, 0.290285,0.291752,0.293219,0.294685,0.296151,0.297616,0.299080,0.300543, 0.302006,0.303468,0.304929,0.306390,0.307850,0.309309,0.310767,0.312225, 0.313682,0.315138,0.316593,0.318048,0.319502,0.320955,0.322408,0.323859, 0.325310,0.326760,0.328210,0.329658,0.331106,0.332553,0.334000,0.335445, 0.336890,0.338334,0.339777,0.341219,0.342661,0.344101,0.345541,0.346980, 0.348419,0.349856,0.351293,0.352729,0.354164,0.355598,0.357031,0.358463, 0.359895,0.361326,0.362756,0.364185,0.365613,0.367040,0.368467,0.369892, 0.371317,0.372741,0.374164,0.375586,0.377007,0.378428,0.379847,0.381266, 0.382683,0.384100,0.385516,0.386931,0.388345,0.389758,0.391170,0.392582, 0.393992,0.395401,0.396810,0.398218,0.399624,0.401030,0.402435,0.403838, 0.405241,0.406643,0.408044,0.409444,0.410843,0.412241,0.413638,0.415034, 0.416430,0.417824,0.419217,0.420609,0.422000,0.423390,0.424780,0.426168, 0.427555,0.428941,0.430326,0.431711,0.433094,0.434476,0.435857,0.437237, 0.438616,0.439994,0.441371,0.442747,0.444122,0.445496,0.446869,0.448241, 0.449611,0.450981,0.452350,0.453717,0.455084,0.456449,0.457813,0.459177, 0.460539,0.461900,0.463260,0.464619,0.465976,0.467333,0.468689,0.470043, 0.471397,0.472749,0.474100,0.475450,0.476799,0.478147,0.479494,0.480839, 0.482184,0.483527,0.484869,0.486210,0.487550,0.488889,0.490226,0.491563, 0.492898,0.494232,0.495565,0.496897,0.498228,0.499557,0.500885,0.502212, 0.503538,0.504863,0.506187,0.507509,0.508830,0.510150,0.511469,0.512786, 0.514103,0.515418,0.516732,0.518045,0.519356,0.520666,0.521975,0.523283, 0.524590,0.525895,0.527199,0.528502,0.529804,0.531104,0.532403,0.533701, 0.534998,0.536293,0.537587,0.538880,0.540171,0.541462,0.542751,0.544039, 0.545325,0.546610,0.547894,0.549177,0.550458,0.551738,0.553017,0.554294, 0.555570,0.556845,0.558119,0.559391,0.560662,0.561931,0.563199,0.564466, 0.565732,0.566996,0.568259,0.569521,0.570781,0.572040,0.573297,0.574553, 0.575808,0.577062,0.578314,0.579565,0.580814,0.582062,0.583309,0.584554, 0.585798,0.587040,0.588282,0.589521,0.590760,0.591997,0.593232,0.594466, 0.595699,0.596931,0.598161,0.599389,0.600616,0.601842,0.603067,0.604290, 0.605511,0.606731,0.607950,0.609167,0.610383,0.611597,0.612810,0.614022, 0.615232,0.616440,0.617647,0.618853,0.620057,0.621260,0.622461,0.623661, 0.624859,0.626056,0.627252,0.628446,0.629638,0.630829,0.632019,0.633207, 0.634393,0.635578,0.636762,0.637944,0.639124,0.640303,0.641481,0.642657, 0.643832,0.645005,0.646176,0.647346,0.648514,0.649681,0.650847,0.652011, 0.653173,0.654334,0.655493,0.656651,0.657807,0.658961,0.660114,0.661266, 0.662416,0.663564,0.664711,0.665856,0.667000,0.668142,0.669283,0.670422, 0.671559,0.672695,0.673829,0.674962,0.676093,0.677222,0.678350,0.679476, 0.680601,0.681724,0.682846,0.683965,0.685084,0.686200,0.687315,0.688429, 0.689541,0.690651,0.691759,0.692866,0.693971,0.695075,0.696177,0.697278, 0.698376,0.699473,0.700569,0.701663,0.702755,0.703845,0.704934,0.706021, 0.707107,0.708191,0.709273,0.710353,0.711432,0.712509,0.713585,0.714659, 0.715731,0.716801,0.717870,0.718937,0.720003,0.721066,0.722128,0.723188, 0.724247,0.725304,0.726359,0.727413,0.728464,0.729514,0.730563,0.731609, 0.732654,0.733697,0.734739,0.735779,0.736817,0.737853,0.738887,0.739920, 0.740951,0.741980,0.743008,0.744034,0.745058,0.746080,0.747101,0.748119, 0.749136,0.750152,0.751165,0.752177,0.753187,0.754195,0.755201,0.756206, 0.757209,0.758210,0.759209,0.760207,0.761202,0.762196,0.763188,0.764179, 0.765167,0.766154,0.767139,0.768122,0.769103,0.770083,0.771061,0.772036, 0.773010,0.773983,0.774953,0.775922,0.776888,0.777853,0.778817,0.779778, 0.780737,0.781695,0.782651,0.783605,0.784557,0.785507,0.786455,0.787402, 0.788346,0.789289,0.790230,0.791169,0.792107,0.793042,0.793975,0.794907, 0.795837,0.796765,0.797691,0.798615,0.799537,0.800458,0.801376,0.802293, 0.803208,0.804120,0.805031,0.805940,0.806848,0.807753,0.808656,0.809558, 0.810457,0.811355,0.812251,0.813144,0.814036,0.814926,0.815814,0.816701, 0.817585,0.818467,0.819348,0.820226,0.821103,0.821977,0.822850,0.823721, 0.824589,0.825456,0.826321,0.827184,0.828045,0.828904,0.829761,0.830616, 0.831470,0.832321,0.833170,0.834018,0.834863,0.835706,0.836548,0.837387, 0.838225,0.839060,0.839894,0.840725,0.841555,0.842383,0.843208,0.844032, 0.844854,0.845673,0.846491,0.847307,0.848120,0.848932,0.849742,0.850549, 0.851355,0.852159,0.852961,0.853760,0.854558,0.855354,0.856147,0.856939, 0.857729,0.858516,0.859302,0.860085,0.860867,0.861646,0.862424,0.863199, 0.863973,0.864744,0.865514,0.866281,0.867046,0.867809,0.868571,0.869330, 0.870087,0.870842,0.871595,0.872346,0.873095,0.873842,0.874587,0.875329, 0.876070,0.876809,0.877545,0.878280,0.879012,0.879743,0.880471,0.881197, 0.881921,0.882643,0.883363,0.884081,0.884797,0.885511,0.886223,0.886932, 0.887640,0.888345,0.889048,0.889750,0.890449,0.891146,0.891841,0.892534, 0.893224,0.893913,0.894599,0.895284,0.895966,0.896646,0.897325,0.898001, 0.898674,0.899346,0.900016,0.900683,0.901349,0.902012,0.902673,0.903332, 0.903989,0.904644,0.905297,0.905947,0.906596,0.907242,0.907886,0.908528, 0.909168,0.909806,0.910441,0.911075,0.911706,0.912335,0.912962,0.913587, 0.914210,0.914830,0.915449,0.916065,0.916679,0.917291,0.917901,0.918508, 0.919114,0.919717,0.920318,0.920917,0.921514,0.922109,0.922701,0.923291, 0.923880,0.924465,0.925049,0.925631,0.926210,0.926787,0.927363,0.927935, 0.928506,0.929075,0.929641,0.930205,0.930767,0.931327,0.931884,0.932440, 0.932993,0.933544,0.934093,0.934639,0.935184,0.935726,0.936266,0.936803, 0.937339,0.937872,0.938404,0.938932,0.939459,0.939984,0.940506,0.941026, 0.941544,0.942060,0.942573,0.943084,0.943593,0.944100,0.944605,0.945107, 0.945607,0.946105,0.946601,0.947094,0.947586,0.948075,0.948561,0.949046, 0.949528,0.950008,0.950486,0.950962,0.951435,0.951906,0.952375,0.952842, 0.953306,0.953768,0.954228,0.954686,0.955141,0.955594,0.956045,0.956494, 0.956940,0.957385,0.957826,0.958266,0.958703,0.959139,0.959572,0.960002, 0.960431,0.960857,0.961280,0.961702,0.962121,0.962538,0.962953,0.963366, 0.963776,0.964184,0.964590,0.964993,0.965394,0.965793,0.966190,0.966584, 0.966976,0.967366,0.967754,0.968139,0.968522,0.968903,0.969281,0.969657, 0.970031,0.970403,0.970772,0.971139,0.971504,0.971866,0.972226,0.972584, 0.972940,0.973293,0.973644,0.973993,0.974339,0.974684,0.975025,0.975365, 0.975702,0.976037,0.976370,0.976700,0.977028,0.977354,0.977677,0.977999, 0.978317,0.978634,0.978948,0.979260,0.979570,0.979877,0.980182,0.980485, 0.980785,0.981083,0.981379,0.981673,0.981964,0.982253,0.982539,0.982824, 0.983105,0.983385,0.983662,0.983937,0.984210,0.984480,0.984749,0.985014, 0.985278,0.985539,0.985798,0.986054,0.986308,0.986560,0.986809,0.987057, 0.987301,0.987544,0.987784,0.988022,0.988258,0.988491,0.988722,0.988950, 0.989177,0.989400,0.989622,0.989841,0.990058,0.990273,0.990485,0.990695, 0.990903,0.991108,0.991311,0.991511,0.991710,0.991906,0.992099,0.992291, 0.992480,0.992666,0.992850,0.993032,0.993212,0.993389,0.993564,0.993737, 0.993907,0.994075,0.994240,0.994404,0.994565,0.994723,0.994879,0.995033, 0.995185,0.995334,0.995481,0.995625,0.995767,0.995907,0.996045,0.996180, 0.996313,0.996443,0.996571,0.996697,0.996820,0.996941,0.997060,0.997176, 0.997290,0.997402,0.997511,0.997618,0.997723,0.997825,0.997925,0.998023, 0.998118,0.998211,0.998302,0.998390,0.998476,0.998559,0.998640,0.998719, 0.998795,0.998870,0.998941,0.999011,0.999078,0.999142,0.999205,0.999265, 0.999322,0.999378,0.999431,0.999481,0.999529,0.999575,0.999619,0.999660, 0.999699,0.999735,0.999769,0.999801,0.999831,0.999858,0.999882,0.999905, 0.999925,0.999942,0.999958,0.999971,0.999981,0.999989,0.999995,0.999999 }; double sin( double x ) { int index; int quad; index = 1024 * x / (M_PI * 0.5); quad = ( index >> 10 ) & 3; index &= 1023; switch ( quad ) { case 0: return sintable[index]; case 1: return sintable[1023-index]; case 2: return -sintable[index]; case 3: return -sintable[1023-index]; } return 0; } double cos( double x ) { int index; int quad; index = 1024 * x / (M_PI * 0.5); quad = ( index >> 10 ) & 3; index &= 1023; switch ( quad ) { case 3: return sintable[index]; case 0: return sintable[1023-index]; case 1: return -sintable[index]; case 2: return -sintable[1023-index]; } return 0; } /* void create_acostable( void ) { int i; FILE *fp; float a; fp = fopen("c:\\acostable.txt", "w"); fprintf(fp, "float acostable[] = {"); for (i = 0; i < 1024; i++) { if (!(i & 7)) fprintf(fp, "\n"); a = acos( (float) -1 + i / 512 ); fprintf(fp, "%1.8f,", a); } fprintf(fp, "\n}\n"); fclose(fp); } */ float acostable[] = { 3.14159265,3.07908248,3.05317551,3.03328655,3.01651113,3.00172442,2.98834964,2.97604422, 2.96458497,2.95381690,2.94362719,2.93393068,2.92466119,2.91576615,2.90720289,2.89893629, 2.89093699,2.88318015,2.87564455,2.86831188,2.86116621,2.85419358,2.84738169,2.84071962, 2.83419760,2.82780691,2.82153967,2.81538876,2.80934770,2.80341062,2.79757211,2.79182724, 2.78617145,2.78060056,2.77511069,2.76969824,2.76435988,2.75909250,2.75389319,2.74875926, 2.74368816,2.73867752,2.73372510,2.72882880,2.72398665,2.71919677,2.71445741,2.70976688, 2.70512362,2.70052613,2.69597298,2.69146283,2.68699438,2.68256642,2.67817778,2.67382735, 2.66951407,2.66523692,2.66099493,2.65678719,2.65261279,2.64847088,2.64436066,2.64028133, 2.63623214,2.63221238,2.62822133,2.62425835,2.62032277,2.61641398,2.61253138,2.60867440, 2.60484248,2.60103507,2.59725167,2.59349176,2.58975488,2.58604053,2.58234828,2.57867769, 2.57502832,2.57139977,2.56779164,2.56420354,2.56063509,2.55708594,2.55355572,2.55004409, 2.54655073,2.54307530,2.53961750,2.53617701,2.53275354,2.52934680,2.52595650,2.52258238, 2.51922417,2.51588159,2.51255441,2.50924238,2.50594525,2.50266278,2.49939476,2.49614096, 2.49290115,2.48967513,2.48646269,2.48326362,2.48007773,2.47690482,2.47374472,2.47059722, 2.46746215,2.46433933,2.46122860,2.45812977,2.45504269,2.45196720,2.44890314,2.44585034, 2.44280867,2.43977797,2.43675809,2.43374890,2.43075025,2.42776201,2.42478404,2.42181622, 2.41885841,2.41591048,2.41297232,2.41004380,2.40712480,2.40421521,2.40131491,2.39842379, 2.39554173,2.39266863,2.38980439,2.38694889,2.38410204,2.38126374,2.37843388,2.37561237, 2.37279910,2.36999400,2.36719697,2.36440790,2.36162673,2.35885335,2.35608768,2.35332964, 2.35057914,2.34783610,2.34510044,2.34237208,2.33965094,2.33693695,2.33423003,2.33153010, 2.32883709,2.32615093,2.32347155,2.32079888,2.31813284,2.31547337,2.31282041,2.31017388, 2.30753373,2.30489988,2.30227228,2.29965086,2.29703556,2.29442632,2.29182309,2.28922580, 2.28663439,2.28404881,2.28146900,2.27889490,2.27632647,2.27376364,2.27120637,2.26865460, 2.26610827,2.26356735,2.26103177,2.25850149,2.25597646,2.25345663,2.25094195,2.24843238, 2.24592786,2.24342836,2.24093382,2.23844420,2.23595946,2.23347956,2.23100444,2.22853408, 2.22606842,2.22360742,2.22115104,2.21869925,2.21625199,2.21380924,2.21137096,2.20893709, 2.20650761,2.20408248,2.20166166,2.19924511,2.19683280,2.19442469,2.19202074,2.18962092, 2.18722520,2.18483354,2.18244590,2.18006225,2.17768257,2.17530680,2.17293493,2.17056692, 2.16820274,2.16584236,2.16348574,2.16113285,2.15878367,2.15643816,2.15409630,2.15175805, 2.14942338,2.14709226,2.14476468,2.14244059,2.14011997,2.13780279,2.13548903,2.13317865, 2.13087163,2.12856795,2.12626757,2.12397047,2.12167662,2.11938600,2.11709859,2.11481435, 2.11253326,2.11025530,2.10798044,2.10570867,2.10343994,2.10117424,2.09891156,2.09665185, 2.09439510,2.09214129,2.08989040,2.08764239,2.08539725,2.08315496,2.08091550,2.07867884, 2.07644495,2.07421383,2.07198545,2.06975978,2.06753681,2.06531651,2.06309887,2.06088387, 2.05867147,2.05646168,2.05425445,2.05204979,2.04984765,2.04764804,2.04545092,2.04325628, 2.04106409,2.03887435,2.03668703,2.03450211,2.03231957,2.03013941,2.02796159,2.02578610, 2.02361292,2.02144204,2.01927344,2.01710710,2.01494300,2.01278113,2.01062146,2.00846399, 2.00630870,2.00415556,2.00200457,1.99985570,1.99770895,1.99556429,1.99342171,1.99128119, 1.98914271,1.98700627,1.98487185,1.98273942,1.98060898,1.97848051,1.97635399,1.97422942, 1.97210676,1.96998602,1.96786718,1.96575021,1.96363511,1.96152187,1.95941046,1.95730088, 1.95519310,1.95308712,1.95098292,1.94888050,1.94677982,1.94468089,1.94258368,1.94048818, 1.93839439,1.93630228,1.93421185,1.93212308,1.93003595,1.92795046,1.92586659,1.92378433, 1.92170367,1.91962459,1.91754708,1.91547113,1.91339673,1.91132385,1.90925250,1.90718266, 1.90511432,1.90304746,1.90098208,1.89891815,1.89685568,1.89479464,1.89273503,1.89067683, 1.88862003,1.88656463,1.88451060,1.88245794,1.88040664,1.87835668,1.87630806,1.87426076, 1.87221477,1.87017008,1.86812668,1.86608457,1.86404371,1.86200412,1.85996577,1.85792866, 1.85589277,1.85385809,1.85182462,1.84979234,1.84776125,1.84573132,1.84370256,1.84167495, 1.83964848,1.83762314,1.83559892,1.83357582,1.83155381,1.82953289,1.82751305,1.82549429, 1.82347658,1.82145993,1.81944431,1.81742973,1.81541617,1.81340362,1.81139207,1.80938151, 1.80737194,1.80536334,1.80335570,1.80134902,1.79934328,1.79733848,1.79533460,1.79333164, 1.79132959,1.78932843,1.78732817,1.78532878,1.78333027,1.78133261,1.77933581,1.77733985, 1.77534473,1.77335043,1.77135695,1.76936428,1.76737240,1.76538132,1.76339101,1.76140148, 1.75941271,1.75742470,1.75543743,1.75345090,1.75146510,1.74948002,1.74749565,1.74551198, 1.74352900,1.74154672,1.73956511,1.73758417,1.73560389,1.73362426,1.73164527,1.72966692, 1.72768920,1.72571209,1.72373560,1.72175971,1.71978441,1.71780969,1.71583556,1.71386199, 1.71188899,1.70991653,1.70794462,1.70597325,1.70400241,1.70203209,1.70006228,1.69809297, 1.69612416,1.69415584,1.69218799,1.69022062,1.68825372,1.68628727,1.68432127,1.68235571, 1.68039058,1.67842588,1.67646160,1.67449772,1.67253424,1.67057116,1.66860847,1.66664615, 1.66468420,1.66272262,1.66076139,1.65880050,1.65683996,1.65487975,1.65291986,1.65096028, 1.64900102,1.64704205,1.64508338,1.64312500,1.64116689,1.63920905,1.63725148,1.63529416, 1.63333709,1.63138026,1.62942366,1.62746728,1.62551112,1.62355517,1.62159943,1.61964388, 1.61768851,1.61573332,1.61377831,1.61182346,1.60986877,1.60791422,1.60595982,1.60400556, 1.60205142,1.60009739,1.59814349,1.59618968,1.59423597,1.59228235,1.59032882,1.58837536, 1.58642196,1.58446863,1.58251535,1.58056211,1.57860891,1.57665574,1.57470259,1.57274945, 1.57079633,1.56884320,1.56689007,1.56493692,1.56298375,1.56103055,1.55907731,1.55712403, 1.55517069,1.55321730,1.55126383,1.54931030,1.54735668,1.54540297,1.54344917,1.54149526, 1.53954124,1.53758710,1.53563283,1.53367843,1.53172389,1.52976919,1.52781434,1.52585933, 1.52390414,1.52194878,1.51999323,1.51803748,1.51608153,1.51412537,1.51216900,1.51021240, 1.50825556,1.50629849,1.50434117,1.50238360,1.50042576,1.49846765,1.49650927,1.49455060, 1.49259163,1.49063237,1.48867280,1.48671291,1.48475270,1.48279215,1.48083127,1.47887004, 1.47690845,1.47494650,1.47298419,1.47102149,1.46905841,1.46709493,1.46513106,1.46316677, 1.46120207,1.45923694,1.45727138,1.45530538,1.45333893,1.45137203,1.44940466,1.44743682, 1.44546850,1.44349969,1.44153038,1.43956057,1.43759024,1.43561940,1.43364803,1.43167612, 1.42970367,1.42773066,1.42575709,1.42378296,1.42180825,1.41983295,1.41785705,1.41588056, 1.41390346,1.41192573,1.40994738,1.40796840,1.40598877,1.40400849,1.40202755,1.40004594, 1.39806365,1.39608068,1.39409701,1.39211264,1.39012756,1.38814175,1.38615522,1.38416795, 1.38217994,1.38019117,1.37820164,1.37621134,1.37422025,1.37222837,1.37023570,1.36824222, 1.36624792,1.36425280,1.36225684,1.36026004,1.35826239,1.35626387,1.35426449,1.35226422, 1.35026307,1.34826101,1.34625805,1.34425418,1.34224937,1.34024364,1.33823695,1.33622932, 1.33422072,1.33221114,1.33020059,1.32818904,1.32617649,1.32416292,1.32214834,1.32013273, 1.31811607,1.31609837,1.31407960,1.31205976,1.31003885,1.30801684,1.30599373,1.30396951, 1.30194417,1.29991770,1.29789009,1.29586133,1.29383141,1.29180031,1.28976803,1.28773456, 1.28569989,1.28366400,1.28162688,1.27958854,1.27754894,1.27550809,1.27346597,1.27142257, 1.26937788,1.26733189,1.26528459,1.26323597,1.26118602,1.25913471,1.25708205,1.25502803, 1.25297262,1.25091583,1.24885763,1.24679802,1.24473698,1.24267450,1.24061058,1.23854519, 1.23647833,1.23440999,1.23234015,1.23026880,1.22819593,1.22612152,1.22404557,1.22196806, 1.21988898,1.21780832,1.21572606,1.21364219,1.21155670,1.20946958,1.20738080,1.20529037, 1.20319826,1.20110447,1.19900898,1.19691177,1.19481283,1.19271216,1.19060973,1.18850553, 1.18639955,1.18429178,1.18218219,1.18007079,1.17795754,1.17584244,1.17372548,1.17160663, 1.16948589,1.16736324,1.16523866,1.16311215,1.16098368,1.15885323,1.15672081,1.15458638, 1.15244994,1.15031147,1.14817095,1.14602836,1.14388370,1.14173695,1.13958808,1.13743709, 1.13528396,1.13312866,1.13097119,1.12881153,1.12664966,1.12448556,1.12231921,1.12015061, 1.11797973,1.11580656,1.11363107,1.11145325,1.10927308,1.10709055,1.10490563,1.10271831, 1.10052856,1.09833638,1.09614174,1.09394462,1.09174500,1.08954287,1.08733820,1.08513098, 1.08292118,1.08070879,1.07849378,1.07627614,1.07405585,1.07183287,1.06960721,1.06737882, 1.06514770,1.06291382,1.06067715,1.05843769,1.05619540,1.05395026,1.05170226,1.04945136, 1.04719755,1.04494080,1.04268110,1.04041841,1.03815271,1.03588399,1.03361221,1.03133735, 1.02905939,1.02677830,1.02449407,1.02220665,1.01991603,1.01762219,1.01532509,1.01302471, 1.01072102,1.00841400,1.00610363,1.00378986,1.00147268,0.99915206,0.99682798,0.99450039, 0.99216928,0.98983461,0.98749636,0.98515449,0.98280898,0.98045980,0.97810691,0.97575030, 0.97338991,0.97102573,0.96865772,0.96628585,0.96391009,0.96153040,0.95914675,0.95675912, 0.95436745,0.95197173,0.94957191,0.94716796,0.94475985,0.94234754,0.93993099,0.93751017, 0.93508504,0.93265556,0.93022170,0.92778341,0.92534066,0.92289341,0.92044161,0.91798524, 0.91552424,0.91305858,0.91058821,0.90811309,0.90563319,0.90314845,0.90065884,0.89816430, 0.89566479,0.89316028,0.89065070,0.88813602,0.88561619,0.88309116,0.88056088,0.87802531, 0.87548438,0.87293806,0.87038629,0.86782901,0.86526619,0.86269775,0.86012366,0.85754385, 0.85495827,0.85236686,0.84976956,0.84716633,0.84455709,0.84194179,0.83932037,0.83669277, 0.83405893,0.83141877,0.82877225,0.82611928,0.82345981,0.82079378,0.81812110,0.81544172, 0.81275556,0.81006255,0.80736262,0.80465570,0.80194171,0.79922057,0.79649221,0.79375655, 0.79101352,0.78826302,0.78550497,0.78273931,0.77996593,0.77718475,0.77439569,0.77159865, 0.76879355,0.76598029,0.76315878,0.76032891,0.75749061,0.75464376,0.75178826,0.74892402, 0.74605092,0.74316887,0.74027775,0.73737744,0.73446785,0.73154885,0.72862033,0.72568217, 0.72273425,0.71977644,0.71680861,0.71383064,0.71084240,0.70784376,0.70483456,0.70181469, 0.69878398,0.69574231,0.69268952,0.68962545,0.68654996,0.68346288,0.68036406,0.67725332, 0.67413051,0.67099544,0.66784794,0.66468783,0.66151492,0.65832903,0.65512997,0.65191753, 0.64869151,0.64545170,0.64219789,0.63892987,0.63564741,0.63235028,0.62903824,0.62571106, 0.62236849,0.61901027,0.61563615,0.61224585,0.60883911,0.60541564,0.60197515,0.59851735, 0.59504192,0.59154856,0.58803694,0.58450672,0.58095756,0.57738911,0.57380101,0.57019288, 0.56656433,0.56291496,0.55924437,0.55555212,0.55183778,0.54810089,0.54434099,0.54055758, 0.53675018,0.53291825,0.52906127,0.52517867,0.52126988,0.51733431,0.51337132,0.50938028, 0.50536051,0.50131132,0.49723200,0.49312177,0.48897987,0.48480547,0.48059772,0.47635573, 0.47207859,0.46776530,0.46341487,0.45902623,0.45459827,0.45012983,0.44561967,0.44106652, 0.43646903,0.43182577,0.42713525,0.42239588,0.41760600,0.41276385,0.40786755,0.40291513, 0.39790449,0.39283339,0.38769946,0.38250016,0.37723277,0.37189441,0.36648196,0.36099209, 0.35542120,0.34976542,0.34402054,0.33818204,0.33224495,0.32620390,0.32005298,0.31378574, 0.30739505,0.30087304,0.29421096,0.28739907,0.28042645,0.27328078,0.26594810,0.25841250, 0.25065566,0.24265636,0.23438976,0.22582651,0.21693146,0.20766198,0.19796546,0.18777575, 0.17700769,0.16554844,0.15324301,0.13986823,0.12508152,0.10830610,0.08841715,0.06251018, }; double acos( double x ) { int index; if (x < -1) x = -1; if (x > 1) x = 1; index = (float) (1.0 + x) * 511.9; return acostable[index]; } double atan2( double y, double x ) { float base; float temp; float dir; float test; int i; if ( x < 0 ) { if ( y >= 0 ) { // quad 1 base = M_PI / 2; temp = x; x = y; y = -temp; } else { // quad 2 base = M_PI; x = -x; y = -y; } } else { if ( y < 0 ) { // quad 3 base = 3 * M_PI / 2; temp = x; x = -y; y = temp; } } if ( y > x ) { base += M_PI/2; temp = x; x = y; y = temp; dir = -1; } else { dir = 1; } // calcualte angle in octant 0 if ( x == 0 ) { return base; } y /= x; for ( i = 0 ; i < 512 ; i++ ) { test = sintable[i] / sintable[1023-i]; if ( test > y ) { break; } } return base + dir * i * ( M_PI/2048); } #endif #ifdef Q3_VM // bk001127 - guarded this tan replacement // ld: undefined versioned symbol name tan@@GLIBC_2.0 double tan( double x ) { return sin( x ) / cos( x ); } /* * ==================================================== * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this * software is freely granted, provided that this notice * is preserved. * ==================================================== */ typedef union { float value; unsigned int word; } ieee_float_shape_type; /* Get a 32 bit int from a float. */ #define GET_FLOAT_WORD(i,d) \ do { \ ieee_float_shape_type gf_u; \ gf_u.value = (d); \ (i) = gf_u.word; \ } while (0) /* Set a float from a 32 bit int. */ #define SET_FLOAT_WORD(d,i) \ do { \ ieee_float_shape_type sf_u; \ sf_u.word = (i); \ (d) = sf_u.value; \ } while (0) /* A union which permits us to convert between a float and a 32 bit int. */ //acos static const float pi = 3.1415925026e+00, /* 0x40490fda */ pio2_hi = 1.5707962513e+00, /* 0x3fc90fda */ pio2_lo = 7.5497894159e-08, /* 0x33a22168 */ pS0 = 1.6666667163e-01, /* 0x3e2aaaab */ pS1 = -3.2556581497e-01, /* 0xbea6b090 */ pS2 = 2.0121252537e-01, /* 0x3e4e0aa8 */ pS3 = -4.0055535734e-02, /* 0xbd241146 */ pS4 = 7.9153501429e-04, /* 0x3a4f7f04 */ pS5 = 3.4793309169e-05, /* 0x3811ef08 */ qS1 = -2.4033949375e+00, /* 0xc019d139 */ qS2 = 2.0209457874e+00, /* 0x4001572d */ qS3 = -6.8828397989e-01, /* 0xbf303361 */ qS4 = 7.7038154006e-02; /* 0x3d9dc62e */ /* ================== acos ================== */ double acos( double x ) { float z, subp, p, q, r, w, s, c, df; int hx, ix; GET_FLOAT_WORD( hx, x ); ix = hx & 0x7fffffff; if( ix == 0x3f800000 ) { // |x|==1 if( hx > 0 ) return 0.0; // acos(1) = 0 else return pi + (float)2.0 * pio2_lo; // acos(-1)= pi } else if( ix > 0x3f800000 ) { // |x| >= 1 return (x-x)/(x-x); // acos(|x|>1) is NaN } if( ix < 0x3f000000 ) { // |x| < 0.5 if( ix <= 0x23000000 ) return pio2_hi + pio2_lo;//if|x|<2**-57 z = x * x; subp = pS3 + z * ( pS4 + z * pS5 ); // chop up expression to keep mac register based stack happy p = z * ( pS0 + z * ( pS1 + z * ( pS2 + z * subp ) ) ); q = 1.0 + z * ( qS1 + z * ( qS2 + z * ( qS3 + z * qS4 ) ) ); r = p / q; return pio2_hi - ( x - ( pio2_lo - x * r ) ); } else if( hx < 0 ) { // x < -0.5 z = ( 1.0 + x ) * (float)0.5; subp = pS3 + z * ( pS4 + z * pS5 ); // chop up expression to keep mac register based stack happy p = z * ( pS0 + z * ( pS1 + z * ( pS2 + z * subp ) ) ); q = 1.0 + z * ( qS1 + z * ( qS2 + z * ( qS3 + z * qS4 ) ) ); s = sqrt( z ); r = p / q; w = r * s - pio2_lo; return pi - (float)2.0 * ( s + w ); } else { // x > 0.5 int idf; z = ( 1.0 - x ) * (float)0.5; s = sqrt( z ); df = s; GET_FLOAT_WORD( idf, df ); SET_FLOAT_WORD( df, idf & 0xfffff000 ); c = ( z - df * df ) / ( s + df ); subp = pS3 + z * ( pS4 + z * pS5 ); // chop up expression to keep mac register based stack happy p = z * ( pS0 + z * ( pS1 + z * ( pS2 + z * subp ) ) ); q = 1.0 + z * ( qS1 + z * ( qS2 + z * ( qS3 + z * qS4 ) ) ); r = p / q; w = r * s + c; return (double)( 2.0 * ( df + w ) ); } } //pow static const float bp[ ] = { 1.0, 1.5, }, dp_h[ ] = { 0.0, 5.84960938e-01, }, /* 0x3f15c000 */ dp_l[ ] = { 0.0, 1.56322085e-06, }, /* 0x35d1cfdc */ huge = 1.0e+30, tiny = 1.0e-30, zero = 0.0, one = 1.0, two = 2.0, two24 = 16777216.0, /* 0x4b800000 */ two25 = 3.355443200e+07, /* 0x4c000000 */ twom25 = 2.9802322388e-08, /* 0x33000000 */ /* poly coefs for (3/2)*(log(x)-2s-2/3*s**3 */ L1 = 6.0000002384e-01, /* 0x3f19999a */ L2 = 4.2857143283e-01, /* 0x3edb6db7 */ L3 = 3.3333334327e-01, /* 0x3eaaaaab */ L4 = 2.7272811532e-01, /* 0x3e8ba305 */ L5 = 2.3066075146e-01, /* 0x3e6c3255 */ L6 = 2.0697501302e-01, /* 0x3e53f142 */ P1 = 1.6666667163e-01, /* 0x3e2aaaab */ P2 = -2.7777778450e-03, /* 0xbb360b61 */ P3 = 6.6137559770e-05, /* 0x388ab355 */ P4 = -1.6533901999e-06, /* 0xb5ddea0e */ P5 = 4.1381369442e-08, /* 0x3331bb4c */ lg2 = 6.9314718246e-01, /* 0x3f317218 */ lg2_h = 6.93145752e-01, /* 0x3f317200 */ lg2_l = 1.42860654e-06, /* 0x35bfbe8c */ ovt = 4.2995665694e-08, /* -(128-log2(ovfl+.5ulp)) */ cp = 9.6179670095e-01, /* 0x3f76384f =2/(3ln2) */ cp_h = 9.6179199219e-01, /* 0x3f763800 =head of cp */ cp_l = 4.7017383622e-06, /* 0x369dc3a0 =tail of cp_h */ ivln2 = 1.4426950216e+00, /* 0x3fb8aa3b =1/ln2 */ ivln2_h = 1.4426879883e+00, /* 0x3fb8aa00 =16b 1/ln2*/ ivln2_l = 7.0526075433e-06; /* 0x36eca570 =1/ln2 tail*/ /* ================== copysignf ================== */ static float copysignf( float x, float y ) { unsigned int ix, iy; GET_FLOAT_WORD( ix, x ); GET_FLOAT_WORD( iy, y ); SET_FLOAT_WORD( x, ( ix & 0x7fffffff ) | ( iy & 0x80000000 ) ); return x; } /* ================== __scalbnf ================== */ static float __scalbnf( float x, int n ) { int k, ix; GET_FLOAT_WORD( ix, x ); k = ( ix & 0x7f800000 ) >> 23; /* extract exponent */ if( k == 0 ) { /* 0 or subnormal x */ if( ( ix & 0x7fffffff ) == 0 ) return x; /* +-0 */ x *= two25; GET_FLOAT_WORD( ix, x ); k = ( ( ix & 0x7f800000 ) >> 23 ) - 25; } if( k == 0xff ) return x+x; /* NaN or Inf */ k = k + n; if( n > 50000 || k > 0xfe ) return huge * copysignf( huge, x ); /* overflow */ if ( n < -50000 ) return tiny * copysignf( tiny, x ); /*underflow*/ if( k > 0 ) /* normal result */ { SET_FLOAT_WORD( x, ( ix & 0x807fffff ) | ( k << 23 ) ); return x; } if( k <= -25 ) return tiny * copysignf( tiny, x ); /*underflow*/ k += 25; /* subnormal result */ SET_FLOAT_WORD( x, ( ix & 0x807fffff ) | ( k << 23 ) ); return x * twom25; } /* ================== pow ================== */ float pow( float x, float y ) { float z, ax, z_h, z_l, p_h, p_l; float y1, subt1, t1, t2, subr, r, s, t, u, v, w; int i, j, k, yisint, n; int hx, hy, ix, iy, is; /*TA: for some reason the Q3 VM goes apeshit when x = 1.0 and y > 1.0. Curiously this doesn't happen with gcc hence this hack*/ if( x == 1.0 ) return x; GET_FLOAT_WORD( hx, x ); GET_FLOAT_WORD( hy, y ); ix = hx & 0x7fffffff; iy = hy & 0x7fffffff; /* y==zero: x**0 = 1 */ if( iy == 0 ) return one; /* +-NaN return x+y */ if( ix > 0x7f800000 || iy > 0x7f800000 ) return x + y; /* determine if y is an odd int when x < 0 * yisint = 0 ... y is not an integer * yisint = 1 ... y is an odd int * yisint = 2 ... y is an even int */ yisint = 0; if( hx < 0 ) { if( iy >= 0x4b800000 ) yisint = 2; /* even integer y */ else if( iy >= 0x3f800000 ) { k = ( iy >> 23 ) - 0x7f; /* exponent */ j = iy >> ( 23 - k ); if( ( j << ( 23 - k ) ) == iy ) yisint = 2 - ( j & 1 ); } } /* special value of y */ if( iy == 0x7f800000 ) { /* y is +-inf */ if( ix == 0x3f800000 ) return y - y; /* inf**+-1 is NaN */ else if( ix > 0x3f800000 )/* (|x|>1)**+-inf = inf,0 */ return ( hy >= 0 ) ? y : zero; else /* (|x|<1)**-,+inf = inf,0 */ return ( hy < 0 ) ? -y : zero; } if( iy == 0x3f800000 ) { /* y is +-1 */ if( hy < 0 ) return one / x; else return x; } if( hy == 0x40000000 ) return x * x; /* y is 2 */ if( hy == 0x3f000000 ) { /* y is 0.5 */ if( hx >= 0 ) /* x >= +0 */ return sqrt( x ); } ax = fabs( x ); /* special value of x */ if( ix == 0x7f800000 || ix == 0 || ix == 0x3f800000 ) { z = ax; /*x is +-0,+-inf,+-1*/ if( hy < 0 ) z = one / z; /* z = (1/|x|) */ if( hx < 0 ) { if( ( ( ix - 0x3f800000 ) | yisint ) == 0 ) z = ( z - z ) / ( z - z ); /* (-1)**non-int is NaN */ else if( yisint == 1 ) z = -z; /* (x<0)**odd = -(|x|**odd) */ } return z; } /* (x<0)**(non-int) is NaN */ if( ( ( ( (unsigned int)hx >> 31 ) - 1 ) | yisint ) == 0 ) return ( x - x ) / ( x - x ); /* |y| is huge */ if( iy > 0x4d000000 ) { /* if |y| > 2**27 */ /* over/underflow if x is not close to one */ if( ix < 0x3f7ffff8 ) return ( hy < 0 ) ? huge * huge : tiny * tiny; if( ix > 0x3f800007 ) return ( hy > 0 ) ? huge * huge : tiny * tiny; /* now |1-x| is tiny <= 2**-20, suffice to compute log(x) by x-x^2/2+x^3/3-x^4/4 */ t = x - 1; /* t has 20 trailing zeros */ w = ( t * t ) * ( (float)0.5 - t * ( (float)0.333333333333 - t * (float)0.25 ) ); u = ivln2_h * t; /* ivln2_h has 16 sig. bits */ v = t * ivln2_l - w * ivln2; t1 = u + v; GET_FLOAT_WORD( is, t1 ); SET_FLOAT_WORD( t1, is & 0xfffff000 ); t2 = v - ( t1 - u ); } else { float s2, s_h, s_l, t_h, t_l; n = 0; /* take care subnormal number */ if( ix < 0x00800000 ) { ax *= two24; n -= 24; GET_FLOAT_WORD( ix, ax ); } n += ( ( ix ) >> 23 ) - 0x7f; j = ix & 0x007fffff; /* determine interval */ ix = j | 0x3f800000; /* normalize ix */ if( j <= 0x1cc471 ) k = 0; /* |x|> 1 ) | 0x20000000 ) + 0x0040000 + ( k << 21 ) ); t_l = ax - ( t_h - bp[ k ] ); s_l = v * ( ( u - s_h * t_h ) - s_h * t_l ); /* compute log(ax) */ s2 = s * s; subr = L3 + s2 * ( L4 + s2 * ( L5 + s2 * L6 ) ); // chop up expression to keep mac register based stack happy r = s2 * s2 * ( L1 + s2 * ( L2 + s2 * subr ) ); r += s_l * ( s_h + s ); s2 = s_h * s_h; t_h = (float)3.0 + s2 + r; GET_FLOAT_WORD( is, t_h ); SET_FLOAT_WORD( t_h, is & 0xfffff000 ); t_l = r - ( ( t_h - (float)3.0 ) - s2 ); /* u+v = s*(1+...) */ u = s_h * t_h; v = s_l * t_h + t_l * s; /* 2/(3log2)*(s+...) */ p_h = u + v; GET_FLOAT_WORD( is, p_h ); SET_FLOAT_WORD( p_h, is & 0xfffff000 ); p_l = v - ( p_h - u ); z_h = cp_h * p_h; /* cp_h+cp_l = 2/(3*log2) */ z_l = cp_l * p_h + p_l * cp + dp_l[ k ]; /* log2(ax) = (s+..)*2/(3*log2) = n + dp_h + z_h + z_l */ t = (float)n; t1 = ( ( ( z_h + z_l ) + dp_h[ k ] ) + t ); GET_FLOAT_WORD( is, t1 ); SET_FLOAT_WORD( t1, is & 0xfffff000 ); t2 = z_l - ( ( ( t1 - t ) - dp_h[ k ] ) - z_h ); } s = one; /* s (sign of result -ve**odd) = -1 else = 1 */ if( ( ( ( (unsigned int)hx >> 31 ) - 1 ) | ( yisint - 1 ) ) == 0 ) s = -one; /* (-ve)**(odd int) */ /* split up y into y1+y2 and compute (y1+y2)*(t1+t2) */ GET_FLOAT_WORD( is, y ); SET_FLOAT_WORD( y1, is & 0xfffff000 ); p_l = ( y - y1 ) * t1 + y * t2; p_h = y1 * t1; z = p_l + p_h; GET_FLOAT_WORD( j, z ); if( j > 0x43000000 ) /* if z > 128 */ return s * huge * huge; /* overflow */ else if( j == 0x43000000 ) { /* if z == 128 */ if( p_l + ovt > z - p_h ) return s * huge * huge; /* overflow */ } else if( ( j & 0x7fffffff ) > 0x43160000 ) /* z <= -150 */ return s * tiny * tiny; /* underflow */ else if( (unsigned int)j == 0xc3160000 ) { /* z == -150 */ if( p_l <= z - p_h ) return s * tiny * tiny; /* underflow */ } /* * compute 2**(p_h+p_l) */ i = j & 0x7fffffff; k = ( i >> 23 ) - 0x7f; n = 0; if( i > 0x3f000000 ) { /* if |z| > 0.5, set n = [z+0.5] */ n = j + ( 0x00800000 >> ( k + 1 ) ); k = ( ( n & 0x7fffffff ) >> 23 ) - 0x7f; /* new k for n */ SET_FLOAT_WORD( t, n & ~( 0x007fffff >> k ) ); n = ( ( n & 0x007fffff ) | 0x00800000 ) >> ( 23 - k ); if( j < 0 ) n = -n; p_h -= t; } t = p_l + p_h; GET_FLOAT_WORD( is, t ); SET_FLOAT_WORD( t, is & 0xfffff000 ); u = t * lg2_h; v = ( p_l - ( t - p_h ) ) * lg2 + t * lg2_l; z = u + v; w = v - ( z - u ); t = z * z; subt1 = P3 + t * ( P4 + t * P5 ); // chop up expression to keep mac register based stack happy t1 = z - t * ( P1 + t * ( P2 + t * subt1 ) ); r = ( z * t1 ) / ( t1 - two ) - ( w + z * w ); z = one - ( r - z ); GET_FLOAT_WORD( j, z ); j += (n << 23 ); if( ( j >> 23 ) <= 0 ) z = __scalbnf( z, n ); /* subnormal output */ else SET_FLOAT_WORD( z, j ); return s * z; } #endif static int randSeed = 0; void srand( unsigned seed ) { randSeed = seed; } int rand( void ) { randSeed = ( 69069 * randSeed + 1 ); return randSeed & 0x7fff; } double atof( const char *string ) { float sign; float value; int c; // skip whitespace while( *string <= ' ' ) { if( !*string ) return 0; string++; } // check sign switch( *string ) { case '+': string++; sign = 1; break; case '-': string++; sign = -1; break; default: sign = 1; break; } // read digits value = 0; c = string[ 0 ]; if( c != '.' ) { do { c = *string++; if( c < '0' || c > '9' ) break; c -= '0'; value = value * 10 + c; } while( 1 ); } else string++; // check for decimal point if( c == '.' ) { double fraction; fraction = 0.1; do { c = *string++; if( c < '0' || c > '9' ) break; c -= '0'; value += c * fraction; fraction *= 0.1; } while( 1 ); } // not handling 10e10 notation... return value * sign; } double _atof( const char **stringPtr ) { const char *string; float sign; float value; int c = '0'; // bk001211 - uninitialized use possible string = *stringPtr; // skip whitespace while( *string <= ' ' ) { if( !*string ) { *stringPtr = string; return 0; } string++; } // check sign switch( *string ) { case '+': string++; sign = 1; break; case '-': string++; sign = -1; break; default: sign = 1; break; } // read digits value = 0; if( string[ 0 ] != '.' ) { do { c = *string++; if( c < '0' || c > '9' ) break; c -= '0'; value = value * 10 + c; } while( 1 ); } // check for decimal point if( c == '.' ) { double fraction; fraction = 0.1; do { c = *string++; if( c < '0' || c > '9' ) break; c -= '0'; value += c * fraction; fraction *= 0.1; } while( 1 ); } // not handling 10e10 notation... *stringPtr = string; return value * sign; } // bk001120 - presumably needed for Mac //#if !defined ( _MSC_VER ) && ! defined ( __linux__ ) // bk001127 - undid undo #if defined ( Q3_VM ) int atoi( const char *string ) { int sign; int value; int c; // skip whitespace while( *string <= ' ' ) { if( !*string ) return 0; string++; } // check sign switch( *string ) { case '+': string++; sign = 1; break; case '-': string++; sign = -1; break; default: sign = 1; break; } // read digits value = 0; do { c = *string++; if( c < '0' || c > '9' ) break; c -= '0'; value = value * 10 + c; } while( 1 ); // not handling 10e10 notation... return value * sign; } int _atoi( const char **stringPtr ) { int sign; int value; int c; const char *string; string = *stringPtr; // skip whitespace while( *string <= ' ' ) { if( !*string ) return 0; string++; } // check sign switch( *string ) { case '+': string++; sign = 1; break; case '-': string++; sign = -1; break; default: sign = 1; break; } // read digits value = 0; do { c = *string++; if( c < '0' || c > '9' ) break; c -= '0'; value = value * 10 + c; } while( 1 ); // not handling 10e10 notation... *stringPtr = string; return value * sign; } int abs( int n ) { return n < 0 ? -n : n; } double fabs( double x ) { return x < 0 ? -x : x; } //========================================================= #define ALT 0x00000001 /* alternate form */ #define HEXPREFIX 0x00000002 /* add 0x or 0X prefix */ #define LADJUST 0x00000004 /* left adjustment */ #define LONGDBL 0x00000008 /* long double */ #define LONGINT 0x00000010 /* long integer */ #define QUADINT 0x00000020 /* quad integer */ #define SHORTINT 0x00000040 /* short integer */ #define ZEROPAD 0x00000080 /* zero (as opposed to blank) pad */ #define FPT 0x00000100 /* floating point number */ #define to_digit(c) ((c) - '0') #define is_digit(c) ((unsigned)to_digit(c) <= 9) #define to_char(n) ((n) + '0') void AddInt( char **buf_p, int val, int width, int flags ) { char text[ 32 ]; int digits; int signedVal; char *buf; digits = 0; signedVal = val; if( val < 0 ) val = -val; do { text[ digits++ ] = '0' + val % 10; val /= 10; } while( val ); if( signedVal < 0 ) text[ digits++ ] = '-'; buf = *buf_p; if( !( flags & LADJUST ) ) { while( digits < width ) { *buf++ = ( flags & ZEROPAD ) ? '0' : ' '; width--; } } while( digits-- ) { *buf++ = text[ digits ]; width--; } if( flags & LADJUST ) { while( width-- ) *buf++ = ( flags & ZEROPAD ) ? '0' : ' '; } *buf_p = buf; } void AddFloat( char **buf_p, float fval, int width, int prec ) { char text[ 32 ]; int digits; float signedVal; char *buf; int val; // get the sign signedVal = fval; if( fval < 0 ) fval = -fval; // write the float number digits = 0; val = (int)fval; do { text[ digits++ ] = '0' + val % 10; val /= 10; } while( val ); if( signedVal < 0 ) text[digits++] = '-'; buf = *buf_p; while( digits < width ) *buf++ = ' '; width--; while( digits-- ) *buf++ = text[ digits ]; *buf_p = buf; if( prec < 0 ) prec = 6; // write the fraction digits = 0; while( digits < prec ) { fval -= (int)fval; fval *= 10.0; val = (int)fval; text[ digits++ ] = '0' + val % 10; } if( digits > 0 ) { buf = *buf_p; *buf++ = '.'; for( prec = 0; prec < digits; prec++ ) *buf++ = text[ prec ]; *buf_p = buf; } } void AddVec3_t( char **buf_p, vec3_t v, int width, int prec ) { char *buf; buf = *buf_p; *buf++ = '['; AddFloat( &buf, v[ 0 ], width, prec ); buf += width; *buf++ = ' '; AddFloat( &buf, v[ 1 ], width, prec ); buf += width; *buf++ = ' '; AddFloat( &buf, v[ 2 ], width, prec ); buf += width; *buf++ = ']'; *buf_p = buf; } void AddString( char **buf_p, char *string, int width, int prec ) { int size; char *buf; buf = *buf_p; if( string == NULL ) { string = "(null)"; prec = -1; } if( prec >= 0 ) { for( size = 0; size < prec; size++ ) { if( string[ size ] == '\0' ) break; } } else size = strlen( string ); width -= size; while( size-- ) *buf++ = *string++; while( width-- > 0 ) *buf++ = ' '; *buf_p = buf; } /* vsprintf I'm not going to support a bunch of the more arcane stuff in here just to keep it simpler. For example, the '*' and '$' are not currently supported. I've tried to make it so that it will just parse and ignore formats we don't support. */ int vsprintf( char *buffer, const char *fmt, va_list argptr ) { int *arg; char *buf_p; char ch; int flags; int width; int prec; int n; char sign; buf_p = buffer; arg = (int *)argptr; while( qtrue ) { // run through the format string until we hit a '%' or '\0' for( ch = *fmt; ( ch = *fmt ) != '\0' && ch != '%'; fmt++ ) *buf_p++ = ch; if( ch == '\0' ) goto done; // skip over the '%' fmt++; // reset formatting state flags = 0; width = 0; prec = -1; sign = '\0'; rflag: ch = *fmt++; reswitch: switch( ch ) { case '-': flags |= LADJUST; goto rflag; case '.': n = 0; while( is_digit( ( ch = *fmt++ ) ) ) n = 10 * n + ( ch - '0' ); prec = n < 0 ? -1 : n; goto reswitch; case '0': flags |= ZEROPAD; goto rflag; case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': n = 0; do { n = 10 * n + ( ch - '0' ); ch = *fmt++; } while( is_digit( ch ) ); width = n; goto reswitch; case 'c': *buf_p++ = (char)*arg; arg++; break; case 'd': case 'i': AddInt( &buf_p, *arg, width, flags ); arg++; break; case 'f': AddFloat( &buf_p, *(double *)arg, width, prec ); #ifdef __LCC__ arg += 1; // everything is 32 bit in my compiler #else arg += 2; #endif break; case 's': AddString( &buf_p, (char *)*arg, width, prec ); arg++; break; case 'v': AddVec3_t( &buf_p, (vec_t *)*arg, width, prec ); arg++; break; case '%': *buf_p++ = ch; break; default: *buf_p++ = (char)*arg; arg++; break; } } done: *buf_p = 0; return buf_p - buffer; } /* this is really crappy */ int sscanf( const char *buffer, const char *fmt, ... ) { int cmd; int **arg; int count; arg = (int **)&fmt + 1; count = 0; while( *fmt ) { if( fmt[ 0 ] != '%' ) { fmt++; continue; } cmd = fmt[ 1 ]; fmt += 2; switch( cmd ) { case 'i': case 'd': case 'u': **arg = _atoi( &buffer ); break; case 'f': *(float *)*arg = _atof( &buffer ); break; } arg++; } return count; } #endif