[LLVMdev] x86 rounding mode question

[Bob]

Hi,

 

Is there a recommended way to round to the nearest whole (x86 RC field of
FPU control  = 00) ?

 

It appears an intentional truncation instruction is generated (if ms
disassembly is correct):

 

IRBuilder<>::CreateFPToSI

 

%1 = fptosi double %0 to i64

 

00370025  fisttp      qword ptr [esp]

 

Thanks,

Bob

 

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