isnan

Description

Test if a floating-point value is not-a-number.

Signature

bool isnan<T>(T x)
    where T : __BuiltinFloatingPointType;

vector<bool, N> isnan<T, N:int>(vector<T, N> x)
    where T : __BuiltinFloatingPointType;

matrix<bool, N, M> isnan<T, N:int, M:int>(matrix<T, N, M> x)
    where T : __BuiltinFloatingPointType;

Generic Parameters

T: __BuiltinFloatingPointType

N : int

M : int

Parameters

x : T

The input value.

x : vector<T, N>

The input value.

x : matrix<T, N, M>

The input value.

Return value

true if x is not-a-number, false otherwise.

Availability and Requirements

Defined for the following targets:

hlsl

Available in all stages.

glsl

Available in all stages.

cpp

Available in all stages.

cuda

Available in all stages.

metal

Available in all stages.

wgsl

Available in all stages.

spirv

Available in all stages.