.\" Generated by the Allegro makedoc utility
.TH ftofix 3alleg4 "version 4.4.3" "Allegro" "Allegro manual"
.SH NAME
ftofix \- Converts a floating point value to fixed point. Allegro game programming library.\&
.SH SYNOPSIS
.B #include <allegro.h>

.sp
.B fixed ftofix(double x);
.SH 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:

.nf
   fixed number;
   number = itofix(-40000);
   ASSERT(fixfloor(number) == -32768);
   number = itofix(64000);
   ASSERT(fixfloor(number) == 32767);
   ASSERT(!errno); /* This will fail. */
.fi
.SH "RETURN VALUE"
Returns the value of the floating point value converted to fixed point
clamping overflows (and setting `errno').

.SH SEE ALSO
.BR fixtof (3alleg4),
.BR itofix (3alleg4),
.BR fixtoi (3alleg4),
.BR exfixed (3alleg4),
.BR exrotscl (3alleg4),
.BR exspline (3alleg4),
.BR exupdate (3alleg4)