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ftofix
Langue: en
Version: version 4.2.2 (fedora - 05/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
ftofix - Converts a floating point value to fixed point. Allegro game programming library.SYNOPSIS
#include <allegro.h>fixed ftofix(double x);
DESCRIPTION
Converts a floating point value to fixed point. Unlike itofix(), this function clamps values which could overflow the type conversion, setting `errno' to ERANGE in the process if this happens. Example:fixed number; number = itofix(-40000); ASSERT(fixfloor(number) == -32768); number = itofix(64000); ASSERT(fixfloor(number) == 32767); ASSERT(!errno); /* This will fail. */
RETURN VALUE
Returns the value of the floating point value converted to fixed point clamping overflows (and setting `errno').SEE ALSO
fixtof(3), itofix(3), fixtoi(3), exfixed(3), exspline(3), exupdate(3)Contenus ©2006-2024 Benjamin Poulain
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