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

ID 767251
Date 3/22/2024
Public

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Document Table of Contents

IEEE_IS_NEGATIVE

Elemental Module Intrinsic Function (Generic): Returns whether an IEEE value is negative.

Module

USE, INTRINSIC :: IEEE_ARITHMETIC

result = IEEE_IS_NEGATIVE (x)

x

(Input) Must be of type REAL.

Results

The result type is default logical. The result has the value true if the value of x is negative; otherwise, false.

An IEEE value is negative if IEEE_CLASS(x) has one of the following values::

IEEE_NEGATIVE_NORMAL

IEEE_NEGATIVE_ZERO

IEEE_NEGATIVE_DENORMAL

IEEE_NEGATIVE_INF

Example

IEEE_IS_NEGATIVE (2.0) has the value false.