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.TH "al_ftofix" "3alleg5" "" "Allegro reference manual" ""
.hy
.SH NAME
.PP
al_ftofix - Allegro 5 API
.SH SYNOPSIS
.IP
.nf
\f[C]
#include <allegro5/allegro.h>

al_fixed al_ftofix(double x);
\f[R]
.fi
.SH DESCRIPTION
.PP
Converts a floating point value to fixed point.
Unlike al_itofix(3alleg5), this function clamps values which could
overflow the type conversion, setting Allegro\[cq]s errno to ERANGE in
the process if this happens.
.PP
Example:
.IP
.nf
\f[C]
al_fixed number;

number = al_itofix(-40000);
assert(al_fixfloor(number) == -32768);

number = al_itofix(64000);
assert(al_fixfloor(number) == 32767);
assert(!al_get_errno()); /* This will fail. */
\f[R]
.fi
.SH RETURN VALUE
.PP
Returns the value of the floating point value converted to fixed point
clamping overflows (and setting Allegro\[cq]s errno).
.SH SEE ALSO
.PP
al_fixtof(3alleg5), al_itofix(3alleg5), al_fixtoi(3alleg5),
al_get_errno(3alleg5)