mojave man page for fixatan2

Query: fixatan2

OS: mojave

Section: 3alleg4

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

fixatan2(3alleg4)						  Allegro manual						 fixatan2(3alleg4)

NAME
fixatan2 - Fixed point version of the libc atan2() routine. Allegro game programming library.
SYNOPSIS
#include <allegro.h> fixed fixatan2(fixed y, fixed x);
DESCRIPTION
This is a fixed point version of the libc atan2() routine. It computes the arc tangent of `y / x', but the signs of both arguments are used to determine the quadrant of the result, and `x' is permitted to be zero. This function is useful to convert Cartesian coordinates to polar coordinates. Example: fixed result; /* Sets `result' to binary angle 64. */ result = fixatan2(itofix(1), 0); /* Sets `result' to binary angle -109. */ result = fixatan2(itofix(-1), itofix(-2)); /* Fails the assert. */ result = fixatan2(0, 0); ASSERT(!errno);
RETURN VALUE
Returns the arc tangent of `y / x' in fixed point binary format angle, from `-128' to `128'. If both `x' and `y' are zero, returns zero and sets `errno' to EDOM.
SEE ALSO
, exlights(3alleg4), exspline(3alleg4) Allegro version 4.4.2 fixatan2(3alleg4)
Related Man Pages
fixcos(3alleg4) - centos
fixcos(3alleg4) - netbsd
fixdiv(3alleg4) - php
fixdiv(3alleg4) - mojave
fixcos(3alleg4) - redhat
Similar Topics in the Unix Linux Community
Split large xml into mutiple files and with header and footer in file
Cannot extract libraries using sed
My first PERL incarnation... Audio Oscillograph
Controlling user input
[BASH] eval command not expanding variables as expected.