search for: fe_except

Displaying 1 result from an estimated 1 matches for "fe_except".

Did you mean: __except
2016 Aug 18
5
fenv.h vs the optimizer
Howdy all, I've been playing around with programs that use the C11 fenv.h. It seems that, currently, the LLVM compiler does not regard to the exception-flag side-effects of floating point operations? When run on my macbook, the example code on http://en.cppreference.com/w/c/numeric/fenv/FE_exceptions does not print all the expected exceptions. Other examples: void foo() { fesetround(FE_DOWNWARD); printf("foo downward: %f\n", rint(0.5)); fesetround(FE_UPWARD); printf("foo upward: %f\n", rint(0.5)); } If compiled with optimization, only one call to...