why not consfold sin(const)

[Toon Moene]

Bradley Lucier wrote:

>> All functions in <math.h> can set errno for domain and range errors; 
>> in other words, those functions are not pure, and cannot be moved out 
>> of loops or CSE'd away.
> 
> Which is one reason to have -fno-math-errno (which is part of -ffast-math).

Sure, but the original implementation of -fno-math-errno I coded because 
Fortran programmers wouldn't have access to errno anyway, didn't concern 
itself with the pureness (or even constness) of the resulting <math.h> 
function.

This is a later addition.

-- 
Toon Moene - e-mail: toon@moene.indiv.nluug.nl - phone: +31 346 214290
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