Intel® Fortran Compiler Classic and Intel® Fortran Compiler Developer Guide and Reference

ID 767251
Date 7/13/2023
Public

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Document Table of Contents

IEEE_SIGNALING_NE

Elemental Module Intrinsic Function (Generic): Performs a signaling comparison for inequality. This is equivalent to the IEEE compareSignalingNotEqual operation.

Module

USE, INTRINSIC :: IEEE_ARITHMETIC

result = IEEE_SIGNALING_NE (a,b)

a

(Input) Must be of type REAL.

b

(Input) Must be of type REAL with the same kind type parameter as a.

Results

The result type is default LOGICAL. It has the value true if a compares not equal to b. If a or b is a NaN, the result is true and IEEE_INVALID signals, otherwise no exception is signaled.

This is the compareSignalingNotEqual operation as specified in the ISO/IEC/IEEE 60559:2011 standard.

Example

The result value of IEEE_SIGNALING_NE (3.7, IEEE_VALUE (0.0, IEEE_QUIET_NAN)) is true and IEEE_INVALID is signaled.