Kito Cheng <kito.cheng@sifive.com> writes:

> +#if defined(__riscv_flen) && __riscv_flen >= 64
> +#include "riscv_math.h"
> +int finite(double x)
> +{
> +	long fclass = _fclass_d (x);
> +	return (fclass & FCLASS_INF) == 0;
> +}

This also needs to check for FCLASS_NAN:

        return (class & (FCLASS_INF|FCLASS_NAN)) == 0;

Same for finitef

-- 
-keith