HLASM Language Reference

SETB Instruction
| ISDEC
| Format: Function-invocation
| Operands: Character
| Output: ISDEC('cexpr') determines the validity of cexpr, a string of 1 to 10
| characters, as the nominal value of a decimal self-defining term usable in a
| SETA expression. If valid, ISDEC returns 1; otherwise, it returns zero. The
| argument string may not be null.
| Example
| ISDEC('12345678') returns 1
| ISDEC('+25') returns (non-decimal character)
| ISDEC('2147483648') returns (value too large)
| ISDEC('5') returns (too many characters)
| ISDEC('') indicates an error condition
| ISHEX
| Format: Function-invocation
| Operands: Character
| Output: ISHEX('cexpr') determines the validity of cexpr, a string of 1 to 8
| characters, as the nominal value of a hexadecimal self-defining term usable in
| a SETA expression. If valid, ISHEX returns 1; otherwise, it returns zero. The
| argument string may not be null.
| Example
| ISHEX('ab34CD9F') returns 1
| ISHEX('abcdEFGH') returns (non-hexadecimal digits)
| ISHEX('123456789') returns (too many characters)
| ISHEX('') indicates an error condition
| ISSYM
| Format: Function-invocation
| Operands: Character
| Output: ISSYM('cexpr') determines the validity of cexpr, a string of 1 to 63
| characters, for use as an ordinary symbol. If valid, ISSYM returns 1;
| otherwise, it returns zero. The argument string may not be null.
| Examples
| ISSYM('Abcd_1234') returns 1
| ISSYM('_Abcd1234') returns 1
| ISSYM('##@$_') returns 1
| ISSYM('1234_Abcd') returns (invalid initial character)
| ISSYM('') indicates an error condition
NOT
OR
Format:
Logical-expression, function-invocation
Operands: Binary
Output: NOT(bexp) inverts the value of the logical expression.
Format: Logical-expression
Operands: Binary
366 HLASM V1R5 Language Reference