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kolibrios/programs/other/graph/math2.cpp

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