isnan

sisnan

Functions

INT sisnan(
    const f32 din
);

INT sisnan(const f32 din)

SISNAN returns nonzero if its argument is NaN, and zero otherwise.

Parameters

in

din

Input to test for NaN.

disnan

Functions

INT disnan(
    const f64 din
);

INT disnan(const f64 din)

DISNAN returns nonzero if its argument is NaN, and zero otherwise.

Parameters

in

din

Input to test for NaN.