al_ftofix
al_fixed al_ftofix(double x);
Converts a floating point value to fixed point. Unlike al_itofix, this function clamps values which could overflow the type conversion, setting Allegro's errno to ERANGE in the process if this happens.
Example:
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. */Return value: Returns the value of the floating point value converted to fixed point clamping overflows (and setting Allegro's errno).
See also: al_fixtof, al_itofix, al_fixtoi, al_get_errno
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