Division by zero in Raw Whitepoint Correction, reported by cppcheck, no Issue

2014-09-01 11:20:24 +02:00
parent 79dc8c97de
commit 1432ca1fc2
1 changed files with 1 additions and 1 deletions
--- a/rtengine/expo_before_b.cc
+++ b/rtengine/expo_before_b.cc
@@ -113,7 +113,7 @@ void RawImageSource::processRawWhitepoint(float expos, float preser) {
 		if(expos>1){
            // Positive exposure
            K = (float) maxVal / expos*exp(-preser*log(2.0));
-            for (int j=0;j<=maxVal;j++) 
+            for (int j=max(1,(int)K);j<=maxVal;j++) 
                lut[(int)j]=(((float)maxVal-K*expos)/((float)maxVal-K)*(j-maxVal)+(float) maxVal) / j;
        } else {
            // Negative exposure