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Bug 2274

Summary: SDL_ceil is incorrectly implemented when HAVE_LIBC is not defined
Product: SDL Reporter: Ghassan Al-Mashareqa <kronikarz>
Component: *don't know*Assignee: Ryan C. Gordon <icculus>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: major    
Priority: P2    
Version: HG 2.0   
Hardware: All   
OS: All   

Description Ghassan Al-Mashareqa 2013-11-26 10:00:51 UTC 
The SDL_ceil function is implemented incorrectly when HAVE_CEIL is not defined (HAVE_LIBC not defined).

The following code:

	double val = SDL_ceil(2.3);
	printf("%g", val);

prints "2.0", as STD_ceil is defined as: 

	double
	SDL_ceil(double x)
	{
	#ifdef HAVE_CEIL
	    return ceil(x);
	#else
	    return (double)(int)((x)+0.5);
	#endif /* HAVE_CEIL */
	}

This functions is used in the SDL_BuildAudioResampleCVT function of the audio subsystem (SDL_audiocvt.c), and causes a bug in that function.
Comment 1 Sam Lantinga 2013-11-27 08:30:44 UTC 
Fixed, thanks!