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EMU387
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E43.CC
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C/C++ Source or Header
|
1991-04-25
|
761b
|
46 lines
#include "emu.h"
#include "rmov.h"
#include "compare.h"
void emu_43()
{
if (empty())
return;
if (modrm > 0277)
{
emu_bad();
}
else
{
// fcomp m64real
reg t;
r_mov((double *)get_modrm(), t);
int c = compare(st(), t);
st().tag = TW_E;
top++;
int f;
if (c & COMP_NAN)
{
exception(EX_I);
f = SW_C3 | SW_C2 | SW_C0;
}
else
switch (c)
{
case COMP_A_LT_B:
f = SW_C0;
break;
case COMP_A_EQ_B:
f = SW_C3;
break;
case COMP_A_GT_B:
f = 0;
break;
case COMP_NOCOMP:
f = SW_C3 | SW_C2 | SW_C0;
break;
}
setcc(f);
}
}