hsluv: avoid div by 0 error

Sigrid Haflínudóttir committed 6 years ago

Commit 52fd69b1 parent 8c213f31 file · +7 −2Browse files

Unified · Split

 static void
 xyz2luv(Triplet* in_out)
 {
-    double var_u = (4.0 * in_out->a) / (in_out->a + (15.0 * in_out->b) + (3.0 * in_out->c));
-    double var_v = (9.0 * in_out->b) / (in_out->a + (15.0 * in_out->b) + (3.0 * in_out->c));
     double l = y2l(in_out->b);
+    double var_u = 4.0 * in_out->a;
+    double var_v = 9.0 * in_out->b;
+    double div = (in_out->a + (15.0 * in_out->b) + (3.0 * in_out->c));
+    if (div > 0.00000001) {
+        var_u /= div;
+        var_v /= div;
+    }
     double u = 13.0 * l * (var_u - ref_u);
     double v = 13.0 * l * (var_v - ref_v);

Keyboard shortcuts