al_fixcos - Online Linux Manual PageSection : 3
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Source : Allegro reference manual
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NAMEal_fixcos − Allegro 5 API

SYNOPSIS #include <allegro5/allegro.h> al_fixed al_fixcos(al_fixed x);

DESCRIPTIONThis function finds the cosine of a value using a lookup table. The input value must be a fixed point binary angle. Example: al_fixed angle; float result; /* Set the binary angle to 45 degrees. */ angle = al_itofix(32); /* The cosine of 45 degrees is about 0.7071. */ result = al_fixtof(al_fixcos(angle)); assert(result > 0.7 && result < 0.71);

RETURN VALUEReturns the cosine of a fixed point binary format angle as a fixed point value.
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