Fix D computation on CAM02

Fix a small bug in CAM02 Thanks to Chris Cox for spotting that
mm2 · Jan 4, 2024 · 59aea91 · 59aea91
1 parent a6fad99
commit 59aea91
Showing 1 changed file with 5 additions and 6 deletions.
diff --git a/src/cmscam02.c b/src/cmscam02.c
@@ -88,17 +88,16 @@ cmsFloat64Number computeFL(cmsCIECAM02* pMod)
     return FL;
 }
 
-static
-cmsFloat64Number computeD(cmsCIECAM02* pMod)
+static cmsFloat64Number computeD(cmsCIECAM02* pMod) 
 {
-    cmsFloat64Number D;
-
-    D = pMod->F - (1.0/3.6)*(exp(((-pMod ->LA-42) / 92.0)));
+    cmsFloat64Number D, temp;
 
+    temp = 1.0 - ((1.0 / 3.6) * exp((-pMod->LA - 42) / 92.0));
+
+    D = pMod->F * temp;
     return D;
 }
 
-
 static
 CAM02COLOR XYZtoCAT02(CAM02COLOR clr)
 {