This resolves several warnings when compiling with MinGW because isnanf
is not in MinGW's math.h (it's not a standard C function). On the other
hand, isnan is a widely available C99 macro designed for both floats and
doubles. We also have an isnan implementation in libs/port/isnan.c for
pre-C99 compilers.
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>