[PATCH 3/9] d3dx9: Add 'asin' preshader opcode.

[Matteo Bruni]

2017-05-08 17:39 GMT+02:00 Paul Gofman <gofmanp at gmail.com>:

> +/* is_nan() does not work (by design) if compiled with gcc -ffinite-math-only option which is implied by
> + * -ffast_math. */
> +static BOOL pres_is_nan(double v)
> +{
> +    return (*(ULONG64 *)&v & 0x7ff8000000000000) == 0x7ff8000000000000;
> +}

I don't think we care about people compiling Wine with broken CFLAGS.
We should just trust the isnan() library function. FWIW we already do
so in other places in Wine.