disnan.f(3)

disnan.f3

Usage

Functions/Subroutines

logical function disnan (din)
DISNAN tests input for NaN.

Function/Subroutine Documentation

logical function disnan (double precision, intent(in) din)

DISNAN tests input for NaN.

Purpose:

!>
!> DISNAN returns .TRUE. if its argument is NaN, and .FALSE.
!> otherwise.  To be replaced by the Fortran 2003 intrinsic in the
!> future.
!> 

Parameters

DIN

!>          DIN is DOUBLE PRECISION
!>          Input to test for NaN.
!> 

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 58 of file disnan.f.

Releases

4 releases since Debian 7 (Wheezy); the text changed 3 times.

  1. 7
  2. 8
  3. 9
  4. Arch

Author

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From lapack-doc 3.12.1-2 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.