NAME

assert – insert program diagnostics

SYNOPSIS

#include <assert.h>

void assert(scalar expression);

DESCRIPTION

If the macro NDEBUG was defined at the moment <assert.h> was last included, the macro assert() generates no code, and hence does nothing at all. Otherwise, the macro assert() prints an error message to debug output using xprintf() and terminates the program by “while(1);” if expression is false (i.e., compares equal to zero).

RETURN VALUES

No value is returned.

ERRORS

No errors are defined.

SEE ALSO

xprintf().

NOTES

This function behavior is different from POSIX. POSIX says that assert() have to prints an error message to standart output and terminates the program by abort(). But usually embedded systems have no standart output and dont’t need to call abort() to terminate the program.