Math library

Language Environment math service library consists of two logical libraries. All routines in one library are called with the callable service interface. All routines in the other library are called using the CWI interface. When a condition is encountered in the callable service invocation, the condition token is constructed. If the caller specifies to receive the condition token, control is returned to the caller. If the caller does not specify to receive the condition token, it is presented to the condition handler for processing. When a condition is encountered in the CWI invocation the language-specific condition handlers are called to handle it. These condition handling rules are the same for software and hardware detected conditions.