forked from KolibriOS/kolibrios
87 lines
1.2 KiB
C++
87 lines
1.2 KiB
C++
#include <math.h>
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#include "kosSyst.h"
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extern "C" int _fltused = 0;
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#define M_PI 3.14159265358979323846
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double __cdecl acos(double x)
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{
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__asm {
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fld qword ptr [esp+4]
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fld1
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fadd st, st(1)
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fld1
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fsub st, st(2)
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fmulp st(1), st
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fsqrt
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fxch st(1)
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fpatan
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}
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}
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double __cdecl asin(double x)
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{
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__asm {
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fld qword ptr [esp+4]
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fld1
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fadd st, st(1)
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fld1
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fsub st, st(2)
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fmulp st(1), st
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fsqrt
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fpatan
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ret
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}
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}
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#if _MSC_VER <= 1200
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extern "C" double _ftol(double x)
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{
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__asm {
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fld qword ptr [esp+4]
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push 1F3Fh
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fstcw word ptr [esp+2]
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fldcw word ptr [esp]
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frndint
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fldcw word ptr [esp+2]
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add esp, 4
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}
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}
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#endif
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/*
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double __cdecl ceil(double x)
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{
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__asm {
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fld qword ptr [esp+4]
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push 1B3Fh
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fstcw word ptr [esp+2]
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fldcw word ptr [esp]
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frndint
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fldcw word ptr [esp+2]
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add esp, 4
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}
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}
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*/
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double __cdecl floor(double x)
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{
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__asm {
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fld qword ptr [esp+4]
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push 173Fh
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fstcw word ptr [esp+2]
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fldcw word ptr [esp]
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frndint
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fldcw word ptr [esp+2]
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add esp, 4
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}
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}
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double __cdecl round(double x)
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{
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__asm {
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fld qword ptr [esp+4]
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push 133Fh
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fstcw word ptr [esp+2]
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fldcw word ptr [esp]
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frndint
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fldcw word ptr [esp+2]
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add esp, 4
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}
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} |