Date: Thu, 11 Sep 2014 16:22:53 +0300 From: Sergey Dmitrouk <sdmitrouk@...esssoftek.com> To: "musl@...ts.openwall.com" <musl@...ts.openwall.com> Subject: Re: [PATCH] Make musl math depend less on libgcc builtins > now that you mention i got reports of spurious invalid > exceptions for nan inputs on arm, but i don't have hardfloat > arm toolchain > > if you have further info on this that would be helpful > > (from the arm docs it seems to me that vfp sqrt should work > according to ieee so either that is wrong or our fenv > exception test is not ok on arm) Note that I'm performing tests in QEMU. vsqrt.f64 instruction returns NAN for NAN input and doesn't raise any exceptions ($fpscr register is unchanged). However I get INVALID exception after printing result with musl implementation of printf(), glibc doesn't raise any exceptions in printf(), but I'm not sure whether it's important, probably not.
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