.\" Automatically generated by Pandoc 3.1.11.1 .\" .TH "al_fixcos" "3" "" "Allegro reference manual" "" .SH NAME al_fixcos \- Allegro 5 API .SH SYNOPSIS .IP .EX #include al_fixed al_fixcos(al_fixed x); .EE .SH DESCRIPTION This function finds the cosine of a value using a lookup table. The input value must be a fixed point binary angle. .PP Example: .IP .EX 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); .EE .SH RETURN VALUE Returns the cosine of a fixed point binary format angle as a fixed point value.