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SDL Wiki

Assertions

Include File(s): SDL_assert.h

Introduction

This category contains functions for managing assertions.

A fairly detailed discussion of the features of SDL_assert vs the standard assert() macro, and some technical explanation about how this is implemented can be found in this Google+ post from Ryan.

SDL_ASSERT_LEVEL affects which assertions, if any, are processed during compiling based on which function was used to create the assertion (see functions below).

SDL_ASSERT_LEVEL can be defined in your project. If not otherwise set, SDL_ASSERT_LEVEL will default to level 2 for debug builds or level 1 for release builds.

The following table describes each SDL_ASSERT_LEVEL setting and the corresponding impact on the three SDL_assert functions:

<rowbgcolor="#EDEDED">SDL_ASSERT_LEVEL

Description

Function

Function Status

<:>0

all assertions disabled

SDL_assert
SDL_assert_release
SDL_assert_paranoid

disabled
disabled
disabled

<:>1

for release (default)

SDL_assert
SDL_assert_release
SDL_assert_paranoid

disabled
enabled
disabled

<:>2

for debugging (default)

SDL_assert
SDL_assert_release
SDL_assert_paranoid

enabled
enabled
disabled

<:>3

stringent for detailed checking

SDL_assert
SDL_assert_release
SDL_assert_paranoid

enabled
enabled
enabled

Enumerations

<<FullSearchCached(category:CategoryEnum CategoryAssertions -title:SGEnumerations)>>

Structures

<<FullSearchCached(category:CategoryStruct CategoryAssertions -title:SGStructures)>>

Functions

<<FullSearchCached(category:CategoryAssertions -CategoryEnum -CategoryStruct -title:SGFunctions)>>


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