DCL:MATH1:SYSLIB : Internal Variable Management and Message Output:Explanation of Functions
Compares two character strings, case non-sensitive.
return_value = NumRu::DCL.lchreq(ch1,ch2)
lchreq (L) A logical function value that returns .TRUE. when two character strings are equal (case non-sensitive) ch1, ch2 (C*(*)) The 2 character strings to be compared