# ieeeck.f - Man Page

## Synopsis

### Functions/Subroutines

integer function **ieeeck** (ISPEC, ZERO, ONE)**IEEECK**

## Function/Subroutine Documentation

### integer function ieeeck (integer ISPEC, real ZERO, real ONE)

**IEEECK**

**Purpose:**

IEEECK is called from the ILAENV to verify that Infinity and possibly NaN arithmetic is safe (i.e. will not trap).

**Parameters:***ISPEC*ISPEC is INTEGER Specifies whether to test just for inifinity arithmetic or whether to test for infinity and NaN arithmetic. = 0: Verify infinity arithmetic only. = 1: Verify infinity and NaN arithmetic.

*ZERO*ZERO is REAL Must contain the value 0.0 This is passed to prevent the compiler from optimizing away this code.

*ONE*ONE is REAL Must contain the value 1.0 This is passed to prevent the compiler from optimizing away this code. RETURN VALUE: INTEGER = 0: Arithmetic failed to produce the correct answers = 1: Arithmetic produced the correct answers

**Author:**Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

**Date:**December 2016

Definition at line 84 of file ieeeck.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

The man page ieeeck(3) is an alias of ieeeck.f(3).

Tue Nov 14 2017 Version 3.8.0 LAPACK