ALLEGRO_PI(3) | ALLEGRO_PI(3) |
NAME
ALLEGRO_PI - Allegro 5 API
SYNOPSIS
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#include <allegro5/allegro.h> #define ALLEGRO_PI 3.14159265358979323846
DESCRIPTION
C99 compilers have no predefined value like M_PI for the constant π, but you can use this one instead.
Allegro reference manual |