.\" Generated by the Allegro makedoc utility
.TH ASSERT 3alleg4 "version 4.4.2" "Allegro" "Allegro manual"
.SH NAME
ASSERT \- Debugging helper macro to assert. Allegro game programming library.\&
.SH SYNOPSIS
.B #include <allegro.h>

.sp
.B void ASSERT(condition);
.SH DESCRIPTION
Debugging helper macro. Normally compiles away to nothing, but if you 
defined the preprocessor symbol DEBUGMODE before including Allegro headers,
it will check the supplied condition and call al_assert() if it fails,
whose default action is to stop the program and report the assert. You can
use this macro even when Allegro has not been initialised. Example:

.nf
   #define DEBUGMODE
   #include 
   ...
   void my_blitter(BITMAP *source, int flags)
   {
      int some_variables;
      ASSERT(source != NULL);
      ASSERT(flags & GAME_RUNNING);
      ...
   }
.fi

.SH SEE ALSO
.BR al_assert (3alleg4),
.BR TRACE (3alleg4),
.BR register_assert_handler (3alleg4),
.BR expackf (3alleg4)