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  3. lapack
  4. sisnan(3)

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sisnan.f(3) LAPACK sisnan.f(3)

NAME

sisnan.f

SYNOPSIS

Functions/Subroutines


logical function sisnan (SIN)
SISNAN tests input for NaN.

Function/Subroutine Documentation

logical function sisnan (real, intent(in) SIN)

SISNAN tests input for NaN.

Purpose: 



 SISNAN returns .TRUE. if its argument is NaN, and .FALSE.


 otherwise.  To be replaced by the Fortran 2003 intrinsic in the


 future.

Parameters:

SIN 



          SIN is REAL


          Input to test for NaN.

Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

June 2017

Definition at line 61 of file sisnan.f.

Author

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Tue Nov 14 2017 Version 3.8.0