Change tabs to two spaces.

src/util/angle.hpp

@@ -32,44 +32,44 @@ const Radians rad360 = 2.0*M_PI;
 
 /// Are two floating point numbers equal up to a small epsilon?
 inline bool almost_equal(double x, double y) {
-	return fabs(x-y) < 1e-10;
+  return fabs(x-y) < 1e-10;
 }
 inline bool is_rad0(double x) {
-	return almost_equal(x,0) || almost_equal(x,rad360);
+  return almost_equal(x,0) || almost_equal(x,rad360);
 }
 inline bool is_rad90(double x) {
-	return almost_equal(x,rad90);
+  return almost_equal(x,rad90);
 }
 inline bool is_rad180(double x) {
-	return almost_equal(x,rad180);
+  return almost_equal(x,rad180);
 }
 inline bool is_rad270(double x) {
-	return almost_equal(x,rad270);
+  return almost_equal(x,rad270);
 }
 
 // ----------------------------------------------------------------------------- : Angle functions
 
 // mod as it should be: answer in range [0..m)
 inline double sane_fmod(double x, double m) {
-	double ans = fmod(x,m);
-	if (ans < 0) return ans + m;
-	else         return ans;
+  double ans = fmod(x,m);
+  if (ans < 0) return ans + m;
+  else         return ans;
 }
 
 // constrain an angle to [0..2pi)
 inline Radians constrain_radians(Radians angle) {
-	return sane_fmod(angle, 2*M_PI);
+  return sane_fmod(angle, 2*M_PI);
 }
 
 /// Is an angle a multiple of 90 degrees?
 inline bool is_straight(Radians angle) {
-	return almost_equal(sane_fmod(angle+rad45,rad90), rad45);
+  return almost_equal(sane_fmod(angle+rad45,rad90), rad45);
 }
 
 /// Is an angle sideways (i.e. closer to 90 or 270 degrees than to 0 or 180 degrees)?
 inline bool is_sideways(Radians angle) {
-	double a = sane_fmod(angle,M_PI);
-	return (a > 0.25*M_PI && a < 0.75*M_PI);
+  double a = sane_fmod(angle,M_PI);
+  return (a > 0.25*M_PI && a < 0.75*M_PI);
 }