table of contents
al_fixatan(3) | al_fixatan(3) |
NAME¶
al_fixatan - Allegro 5 API
SYNOPSIS¶
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#include <allegro5/allegro.h> al_fixed al_fixatan(al_fixed x)
DESCRIPTION¶
This function finds the inverse tangent of a value using a lookup table. The input must be a fixed point value. The inverse tangent is the value whose tangent is x.
Example:
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al_fixed result; /* Sets result to binary angle 13. */ result = al_fixatan(al_ftofix(0.326));
RETURN VALUE¶
Returns the inverse tangent of a fixed point value, measured as a fixed point binary format angle.
Allegro reference manual |