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fixed both fptan and fpatan. Xcom now works flawsless

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1050
This commit is contained in:
Peter Veenstra 2003-06-10 21:09:12 +00:00
parent a1f892935e
commit 6daab43bf7
1 changed files with 3 additions and 1 deletions
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4
src/fpu/fpu_instructions.h
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@ -104,7 +104,8 @@ static void FPU_FSQRT(void){
}
static void FPU_FPATAN(void){
Bitu top = FPU_GET_TOP();
fpu.regs[top].d = atan(fpu.regs[top].d);
fpu.regs[(top+1)&7].d = atan(fpu.regs[(top+1)&7].d/fpu.regs[top].d);
FPU_FPOP();
FPU_SET_C2(0);
//flags and such :)
return;
@ -112,6 +113,7 @@ static void FPU_FPATAN(void){
static void FPU_FPTAN(void){
Bitu top = FPU_GET_TOP();
fpu.regs[top].d = tan(fpu.regs[top].d);
FPU_PUSH(1.0);
FPU_SET_C2(0);
//flags and such :)
return;