.\" Automatically generated by Pandoc 3.1.3 .\" .\" Define V font for inline verbatim, using C font in formats .\" that render this, and otherwise B font. .ie "\f[CB]x\f[]"x" \{\ . ftr V B . ftr VI BI . ftr VB B . ftr VBI BI .\} .el \{\ . ftr V CR . ftr VI CI . ftr VB CB . ftr VBI CBI .\} .TH "ALLEGRO_PI" "3alleg5" "" "Allegro reference manual" "" .hy .SH NAME .PP ALLEGRO_PI - Allegro 5 API .SH SYNOPSIS .IP .nf \f[C] #include #define ALLEGRO_PI 3.14159265358979323846 \f[R] .fi .SH DESCRIPTION .PP C99 compilers have no predefined value like M_PI for the constant π, but you can use this one instead.