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2013-08-15math: fix i386 atan2.s to raise underflow for subnormal resultsSzabolcs Nagy-1/+11
2012-03-19asm for inverse trig functionsRich Felker-0/+7
unlike trig functions, these are easy to do in asm because they do not involve (arbitrary-precision) argument reduction. fpatan automatically takes care of domain issues, and in asin and acos, fsqrt takes care of them for us.