Tidying.

[libdcp.git] / src / modified_gamma_transfer_function.cc

diff --git a/src/modified_gamma_transfer_function.cc b/src/modified_gamma_transfer_function.cc
index bb3886898c5a2ed2c619253f4ecb18f5832c8de8..039e9284e0b01a021f38a002489c3e4cf49b2b10 100644 (file)
--- a/src/modified_gamma_transfer_function.cc
+++ b/src/modified_gamma_transfer_function.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
 
     This file is part of libdcp.
 
@@ -31,14 +31,22 @@
     files in the program, then also delete it here.
 */
 
+
+/** @file  src/modified_gamma_transfer_function.cc
+ *  @brief ModifiedGammaTransferFunction class
+ */
+
+
 #include "modified_gamma_transfer_function.h"
 #include <cmath>
 
+
 using std::pow;
 using std::shared_ptr;
 using std::dynamic_pointer_cast;
 using namespace dcp;
 
+
 ModifiedGammaTransferFunction::ModifiedGammaTransferFunction (double power, double threshold, double A, double B)
        : _power (power)
        , _threshold (threshold)
@@ -48,6 +56,7 @@ ModifiedGammaTransferFunction::ModifiedGammaTransferFunction (double power, doub
 
 }
 
+
 double *
 ModifiedGammaTransferFunction::make_lut (int bit_depth, bool inverse) const
 {
@@ -56,7 +65,7 @@ ModifiedGammaTransferFunction::make_lut (int bit_depth, bool inverse) const
        if (inverse) {
                double const threshold = _threshold / _B;
                for (int i = 0; i < bit_length; ++i) {
-                       double const p = static_cast<double> (i) / (bit_length - 1);
+                       double const p = static_cast<double>(i) / (bit_length - 1);
                        if (p > threshold) {
                                lut[i] = (1 + _A) * pow (p, 1 / _power) - _A;
                        } else {
@@ -65,7 +74,7 @@ ModifiedGammaTransferFunction::make_lut (int bit_depth, bool inverse) const
                }
        } else {
                for (int i = 0; i < bit_length; ++i) {
-                       double const p = static_cast<double> (i) / (bit_length - 1);
+                       double const p = static_cast<double>(i) / (bit_length - 1);
                        if (p > _threshold) {
                                lut[i] = pow ((p + _A) / (1 + _A), _power);
                        } else {
@@ -77,18 +86,19 @@ ModifiedGammaTransferFunction::make_lut (int bit_depth, bool inverse) const
        return lut;
 }
 
+
 bool
 ModifiedGammaTransferFunction::about_equal (shared_ptr<const TransferFunction> other, double epsilon) const
 {
-       shared_ptr<const ModifiedGammaTransferFunction> o = dynamic_pointer_cast<const ModifiedGammaTransferFunction> (other);
+       auto o = dynamic_pointer_cast<const ModifiedGammaTransferFunction>(other);
        if (!o) {
                return false;
        }
 
        return (
-               fabs (_power - o->_power) < epsilon &&
-               fabs (_threshold - o->_threshold) < epsilon &&
-               fabs (_A - o->_A) < epsilon &&
-               fabs (_B - o->_B) < epsilon
+               fabs(_power - o->_power) < epsilon &&
+               fabs(_threshold - o->_threshold) < epsilon &&
+               fabs(_A - o->_A) < epsilon &&
+               fabs(_B - o->_B) < epsilon
                );
 }