Language Reference

IACHAR(C)

Returns the position of a character in the ASCII collating sequence.

C

must be of type default character and of length one.

Class

Elemental function

Result Type and Attributes

Default integer.

Result Value

• If C is in the collating sequence defined by the codes specified in ISO 646:1983 (International Reference Version), the result is the position of C in that sequence and satisfies the inequality (0 <= IACHAR (C) <= 127). An undefined value is returned if C is not in the ASCII collating sequence.
• The results are consistent with the LGE, LGT, LLE, and LLT lexical comparison functions. For example, LLE (C, D) is true, so IACHAR (C) .LE. IACHAR (D) is true too.

Examples

IACHAR ('X') has the value 88.