Changeset 37412 for trunk/Ohana/src/libdvo

Timestamp:

Sep 19, 2014, 4:41:20 PM (12 years ago)

Author:

eugene

Message:

handle equinox and epoch with string values; use image for cursor coords if image is inactive

Location:

trunk/Ohana

Files:

• . (modified) (1 prop)
• src/libdvo/src/coordops.c (modified) (1 diff)

trunk/Ohana/src/libdvo/src/coordops.c

@@ -595 +595 @@
 
   if (status) {
-    if (!gfits_scan (header, "EQUINOX", "%lf", 1, &equinox)) {
-      if (!gfits_scan (header, "EPOCH", "%lf", 1, &equinox)) {
-        equinox = 2000.0;
+    char equinoxString[80];
+    int haveEquinox = gfits_scan (header, "EQUINOX", "%s", 1, equinoxString);
+    if (haveEquinox) {
+      // is the string a valid number (it is bad to interpret an error message as year 0.0)
+      char *endptr;
+      equinox = strtod (equinoxString, &endptr);
+      if (endptr == equinoxString) haveEquinox = FALSE;
+    }
+    if (!haveEquinox) {
+      haveEquinox = gfits_scan (header, "EPOCH", "%s", 1, equinoxString);
+      if (haveEquinox) {
+        // is the string a valid number (it is bad to interpret an error message as year 0.0)
+        char *endptr;
+        equinox = strtod (equinoxString, &endptr);
+        if (endptr == equinoxString) haveEquinox = FALSE;
       }
+    }
+    if (!haveEquinox) {
+      equinox = 2000.0;
     }
     if (fabs (equinox - 2000.0) > 0.1) {