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CHR_ISDIG
-
Return whether a character is a digit
Up: Routine Descriptions
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CHR_ISALF
-
Return whether a character is alphabetic
CHR_ISALM
-
Return whether a character is alphanumeric
- Description:
-
Determine whether a character is alphanumeric, i.e. A - Z,
a - z, 0 - 9 or _. Note that this routine treats the underscore
character as an alphanumeric character.
- Invocation:
-
RESULT = CHR_ISALM( CVALUE )
- Arguments:
-
-
CVALUE = CHARACTER (Given)
-
The character to be tested.
- Returned Value:
-
-
CHR_ISALM = LOGICAL
-
Returns .TRUE. if the given character is alphanumeric,
returns .FALSE. otherwise.

Next:
CHR_ISDIG
-
Return whether a character is a digit
Up: Routine Descriptions
Previous:
CHR_ISALF
-
Return whether a character is alphabetic
CHR Character Handling Routines
Starlink User Note 40
A C Charles
P C T Rees
A J Chipperfield
2 August 1995
E-mail:ussc@star.rl.ac.uk