Cyd
2b8ca921cb
Complete disaster-recovery snapshot: engine/game source, game data assets, VC6 toolchain + DX SDKs, build outputs, deployed game, and _UNUSED archive. Large binaries in Git LFS; text preserved byte-for-byte (core.autocrlf=false, no eol attributes). See RECOVERY.md for the one-clone rebuild procedure.
79 lines
1.5 KiB
C
79 lines
1.5 KiB
C
/**********************************************************************
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*<
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FILE: gfloat
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DESCRIPTION: Single Precision Floating Point Routines
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CREATED BY: Don Brittain & Dan Silva
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HISTORY:
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*> Copyright (c) 1994, All Rights Reserved.
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**********************************************************************/
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#ifndef _GFLOAT_H
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#define _GFLOAT_H
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//-------------------------------------------------------------------------------
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// Single precision floating point stuff...
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//
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inline void SinCos (float angle, float *sine, float *cosine)
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{
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#ifdef _M_IX86 // if on Intel, use assembly language
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__asm {
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push ecx
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fld dword ptr angle
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fsincos
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mov ecx, dword ptr[cosine]
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fstp dword ptr [ecx]
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mov ecx, dword ptr[sine]
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fstp dword ptr [ecx]
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pop ecx
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}
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#else
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*sine = (float)sin (angle);
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*cosine = (float)cos (angle);
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#endif
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}
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inline float Sin(float angle)
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{
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#ifdef _M_IX86
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float s, c;
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SinCos(angle, &s, &c);
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return s;
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#else
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return (float)sin((double)angle);
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#endif
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}
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inline float Cos(float angle)
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{
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#ifdef _M_IX86
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float s, c;
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SinCos(angle, &s, &c);
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return c;
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#else
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return (float)cos((double)angle);
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#endif
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}
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inline float Sqrt(float arg)
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{
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#ifdef _M_IX86
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float ans;
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__asm {
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fld dword ptr arg
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fsqrt
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fstp dword ptr [ans]
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}
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return ans;
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#else
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return (float)sqrt((double)arg);
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#endif
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}
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#endif |