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---
:name: disnan
:md5sum: 6226d5dde19479c96fbf22f35fdf0c6c
:category: :function
:type: logical
:arguments:
- din:
:type: doublereal
:intent: input
:substitutions: {}
:fortran_help: " LOGICAL FUNCTION DISNAN( DIN )\n\n\
* Purpose\n\
* =======\n\
*\n\
* DISNAN returns .TRUE. if its argument is NaN, and .FALSE.\n\
* otherwise. To be replaced by the Fortran 2003 intrinsic in the\n\
* future.\n\
*\n\n\
* Arguments\n\
* =========\n\
*\n\
* DIN (input) DOUBLE PRECISION\n\
* Input to test for NaN.\n\
*\n\n\
* =====================================================================\n\
*\n\
* .. External Functions ..\n LOGICAL DLAISNAN\n EXTERNAL DLAISNAN\n\
* ..\n"
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