ALLEGRO_PI3alleg5
Allegro 5 api
Usage
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#include <allegro5/allegro.h> #define ALLEGRO_PI 3.14159265358979323846
Overview
C99 compilers have no predefined value like M_PI for the constant π, but you can use this one instead.
Releases
6 releases since Debian 8 (Jessie); the text changed 5 times.