| .TH ASSERT 3 | |
| .SH NAME | |
| assert \- check program invariants | |
| .SH SYNOPSIS | |
| .B #include <u.h> | |
| .br | |
| .B #include <libc.h> | |
| .PP | |
| .B | |
| #define assert if(cond);else _assert("cond") | |
| .PP | |
| .B | |
| void _assert(int cond) | |
| .SH DESCRIPTION | |
| .I Assert | |
| is a preprocessor macro that | |
| (via | |
| .IR _assert ) | |
| prints a message and calls | |
| .I abort | |
| when | |
| .I cond | |
| is false. | |
| .SH SOURCE | |
| .B /sys/src/libc/port/_assert.c |