ftofix(3) Allegro manual ftofix(3)NAMEftofix - 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, set‐
ting `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 ALSOfixtof(3), itofix(3), fixtoi(3), exfixed(3), exrotscl(3), exspline(3),
exupdate(3)Allegro version 4.4.2 ftofix(3)