CODEWITHSUNDEEP
assemblyx86floating-pointintelitanium
Marisha
Marisha

Reputation: 906

get exponent of float by assembly instruction from c on Intel Core i5/7

I'm reading a book bottom up and it have instruction to get exponent of float on c compiled via GCC:

asm ("getf.exp %0=%1" : "=r"(exp) : "f"(d));

saying it works on Itanium. On my Core i7 GCC says Error: no such instruction: 'getf.exp %rax=%st'.

I've tried web search but could not find similar instruction for Core iX processors. Is there such?

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