many: remove compat/pi-constant.hpp

With -D_USE_MATH_DEFINES MSVC defines the standard M_PI and
friends.

Since this preprocessor definition is now always passed as part
of the build system for MSVC. We can use M_PI as if on a
mission.

1 files changed, 3 insertions, 4 deletions

diff --git a/tracker-test/test.cpp b/tracker-test/test.cpp
index 3e0db547..9ffdd366 100644
--- a/tracker-test/test.cpp
+++ b/tracker-test/test.cpp
@@ -56,17 +56,16 @@ void FTNoIR_Tracker::data(double *data)
 #endif
         for (int i = 0; i < 6; i++)
         {
-            double x = fmod(last_x[i] + incr[i] * d2r * dt,
-                            2 * pi);
+            double x = fmod(last_x[i] + incr[i] * d2r * dt, 2 * M_PI);
             last_x[i] = x;
 
             if (i >= 3)
             {
 #ifdef DISCONTINUITY
                 if (x > pi + pi/2)
-                    x -= pi;
+                    x -= M_PI;
                 else if (x > pi/2 && x < pi)
-                    x += pi;
+                    x += M_PI;
 #endif
 
                 data[i] = sin(x) * 180;