ftofix (3alleg4)

#include <allegro.h>

fixed ftofix(double x);

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. */

Returns the value of the floating point value converted to fixed point clamping overflows (and setting `errno').

fixtof(3alleg4), itofix(3alleg4), fixtoi(3alleg4), exfixed(3alleg4), exrotscl(3alleg4), exspline(3alleg4), exupdate(3alleg4)