MY_PI              47 tests/rotozoom.c         a = MY_PI - a;  // 0..inf
MY_PI              48 tests/rotozoom.c     a %= 2 * MY_PI;     // 0..2PI
MY_PI              50 tests/rotozoom.c     if (a >= MY_PI * 3 / 2)
MY_PI              51 tests/rotozoom.c         a -= 2 * MY_PI; // -PI / 2 .. 3PI / 2
MY_PI              52 tests/rotozoom.c     if (a >= MY_PI / 2)
MY_PI              53 tests/rotozoom.c         a = MY_PI - a;  // -PI / 2 ..  PI / 2
MY_PI             148 tests/rotozoom.c         radian   = 2 * i * MY_PI / 360;
MY_PI             150 tests/rotozoom.c         h_cos[i] = h * int_sin(radian + MY_PI / 2) / 2 / FIXP;