Definitions: Faster to decode two keys than concept

ecmwf · Apr 15, 2024 · cc3caa2 · cc3caa2
1 parent 7250f5c
commit cc3caa2
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/definitions/grib2/template.4.horizontal.def b/definitions/grib2/template.4.horizontal.def
@@ -66,7 +66,9 @@ if (extraDim) {
 } else {
     # See GRIB-74 why we store the pressureUnits in a transient
     transient tempPressureUnits=pressureUnits;
-    if (!(typeOfLevel is "surface")) {
+    # Same as typeOfLevel != "surface" but much quicker to evaluate
+    # than via the concept
+    if ( ! (typeOfFirstFixedSurface == 1 && typeOfSecondFixedSurface == 255) ) {
         if (tempPressureUnits is "Pa") {
             meta marsLevel scale(level,one,hundred) : read_only;
             alias mars.levelist=marsLevel;