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* math: fix expm1l on x86_64 (avoid underflow for large negative x)•••copy the fix from i386: return -1 instead of exp2l(x)-1 when x <= -65 Szabolcs Nagy2013-09-051-1/+1
* x86_64 math asm, long double functions only•••this has not been tested heavily, but it's known to at least assemble and run in basic usage cases. it's nearly identical to the corresponding i386 code, and thus expected to be just as correct or just as incorrect. Rich Felker2012-03-201-0/+1