laisnan

slaisnan

Functions

INT slaisnan(
    const f32 din1,
    const f32 din2
);

INT slaisnan(const f32 din1, const f32 din2)

This routine is not for general use.

It exists solely to avoid over-optimization in SISNAN.

SLAISNAN checks for NaNs by comparing its two arguments for inequality. NaN is the only floating-point value where NaN != NaN returns TRUE. To check for NaNs, pass the same variable as both arguments.

A compiler must assume that the two arguments are not the same variable, and the test will not be optimized away. Interprocedural or whole-program optimization may delete this test. The ISNAN functions will be replaced by the correct Fortran 03 intrinsic once the intrinsic is widely available.

Parameters

in

din1

First number to compare for inequality.

in

din2

Second number to compare for inequality.

dlaisnan

Functions

INT dlaisnan(
    const f64 din1,
    const f64 din2
);

INT dlaisnan(const f64 din1, const f64 din2)

This routine is not for general use.

It exists solely to avoid over-optimization in DISNAN.

DLAISNAN checks for NaNs by comparing its two arguments for inequality. NaN is the only floating-point value where NaN != NaN returns TRUE. To check for NaNs, pass the same variable as both arguments.

A compiler must assume that the two arguments are not the same variable, and the test will not be optimized away. Interprocedural or whole-program optimization may delete this test. The ISNAN functions will be replaced by the correct Fortran 03 intrinsic once the intrinsic is widely available.

Parameters

in

din1

First number to compare for inequality.

in

din2

Second number to compare for inequality.