Compute Length of Null-Terminated String (STRLENNULL)

Built-in number for STRLENNULL is 23.
STRLENNULL (
            null_terminated_string   : address of aggregate(*)
) :   unsigned binary(4) value which specifies the number of bytes
      between the beginning of the string and the first null (ie. zero)
      byte

Description

The null terminated string is searched for the first null byte (hex 00). The number of non-null bytes found is returned.

Authorization Required

• None

Lock Enforcement

• None

Exceptions

06 Addressing

• 0601 Space Addressing Violation
• 0602 Boundary Alignment

24 Pointer Specification

• 2401 Pointer Does Not Exist

44 Protection Violation

• 4401 Object Domain or Hardware Storage Protection Violation