Guardian C Library Calls Reference Manual

Reference to Library Calls
Guardian TNS C Library Calls Reference Manual—128833 3-227
trap_overflows (supplementary)
trap_overflows (supplementary)
The trap_overflows function allows you to control the treatment of arithmetic overflows.
enable_flag
is an integer that requests overflow trapping be enabled or disabled. If enable_flag is
nonzero, overflow trapping is enabled. If enable_flag is zero, overflows are ignored.
Return Value
none.
Usage Guidelines
•
If overflow trapping is enabled and an overflow occurs, the program stops executing.
•
If overflow trapping is disabled and an overflow occurs, the overflow condition is
simply ignored. That is, the program continues executing, but the value resulting
from the calculation is undefined.
•
The default is overflow trapping enabled.
•
The trap_overflows function is also defined in the <mathh> header.
#include <stdlibh>
void trap_overflows(short enable_flag);