NAME

SRC/disnan.f

SYNOPSIS

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

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.

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