Re: new module 'isfinite'

[Paul Eggert]

Ben Pfaff <address@hidden> writes:

>         * Is it acceptable for isfinite to raise an exception on
>           a signaling NaN?

Yes.

>         * Is it acceptable to #include <float.h> in and put
>           inline functions in math.in.h?

Yes, to both.  Of course 'inline' needs to be configured.

But do you really need float.h?  See below.

> +static inline int gl_isfinitef (float x) 
> +{
> +  return x >= -FLT_MAX && x <= FLT_MAX;
> +}

How about 'return x - x == 0;' instead?  That's easier to configure;
you don't need to worry about <float.h>.