comparison base/LogRange.h @ 1057:5c5d4863b428 tonioni

Merge from cxx11 branch

      * Map a linear range onto a logarithmic range.  min and max are
      * passed as the extents of the linear range and returned as the
      * extents of the logarithmic range.  thresh is the minimum value
      * for the log range, to be used if the linear range spans zero.
      */
-    static void mapRange(float &min, float &max, float thresh = -10);
+    static void mapRange(double &min, double &max, double thresh = -10);
 
     /**
      * Map a value onto a logarithmic range.  This just means taking
      * the base-10 log of the absolute value, or using the threshold
      * value if the absolute value is zero.
      */
-    static float map(float value, float thresh = -10);
+    static double map(double value, double thresh = -10);
 
     /**
      * Map a value from the logarithmic range back again.  This just
      * means taking the value'th power of ten.
      */
-    static float unmap(float value);
+    static double unmap(double value);
 
     /**
      * Estimate whether a set of values would be more properly shown
      * using a logarithmic than a linear scale.  This is only ever
      * going to be a rough guess.
      */
-    static bool useLogScale(std::vector<float> values);
+    static bool useLogScale(std::vector<double> values);
 
 };
 
 #endif