PI                 31 ext/date/lib/astro.c #ifndef PI
PI                 35 ext/date/lib/astro.c #define RADEG     ( 180.0 / PI )
PI                 36 ext/date/lib/astro.c #define DEGRAD    ( PI / 180.0 )
PI                  6 ext/gd/libgd/gdtestft.c #define DEG2RAD(x) ((x)*PI/180.)