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kolibrios/programs/other/graph/math2.cpp
barsuk 9166e950b4 uploaded graph
git-svn-id: svn://kolibrios.org@1005 a494cfbc-eb01-0410-851d-a64ba20cac60
2009-01-28 15:13:38 +00:00

84 lines
1.2 KiB
C++

#include <math.h>
#include "kosSyst.h"
extern "C" int _fltused = 0;
double 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 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
double 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 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 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
}
}