Replace cos and avoid FPU trigonometry (was: tanf returns NaN for large inputs)

Greg Steuck writes: > This failure can be reduced to a trivial program which does change > its behavior for the worse if s_cos.S is taken out: > > #include > #include > > int main(int a, char**b) { > double y = -0.34061437849088045332; > printf("cos(%lf)=%le delta=%e\n", y, cos(y),

Re: Replace cos and avoid FPU trigonometry (was: tanf returns NaN for large inputs)

> From: Greg Steuck > Date: Mon, 10 Jan 2022 20:59:17 -0800 > > Greg Steuck writes: > > > This failure can be reduced to a trivial program which does change > > its behavior for the worse if s_cos.S is taken out: > > > > #include > > #include > > > > int main(int a, char**b) { > > double