Replace use of C macro _FillValue with string "_FillValue"

Author: wkliao

src/cases/e3sm_io_case.hpp

@@ -340,15 +340,15 @@ int scorpio_write_var(e3sm_io_driver &driver,
 #define PUT_ATTR_FILL(val) {                                                  \
     if (varp->xType == NC_FLOAT) {                                            \
         float buf = (float)val;                                               \
-        err = driver.put_att(ncid,varp->vid,_FillValue,varp->xType, 1, &buf); \
+        err = driver.put_att(ncid,varp->vid,"_FillValue",varp->xType,1,&buf); \
     }                                                                         \
     else if (varp->xType == NC_INT) {                                         \
         int buf = (int)val;                                                   \
-        err = driver.put_att(ncid,varp->vid,_FillValue,varp->xType, 1, &buf); \
+        err = driver.put_att(ncid,varp->vid,"_FillValue",varp->xType,1,&buf); \
     }                                                                         \
     else if (varp->xType == NC_DOUBLE) {                                      \
         double buf = (double)val;                                             \
-        err = driver.put_att(ncid,varp->vid,_FillValue,varp->xType, 1, &buf); \
+        err = driver.put_att(ncid,varp->vid,"_FillValue",varp->xType,1,&buf); \
     }                                                                         \
     CHECK_VAR_ERR(varp->_name)                                                \
     cmeta->num_attrs++;                                                       \
@@ -487,16 +487,16 @@ int scorpio_write_var(e3sm_io_driver &driver,
 }
 #define GET_ATTR_FILL(val) {                                                  \
     if (varp->xType == NC_FLOAT) {                                            \
-        err = driver.get_att(ncid,varp->vid,_FillValue,&val);                 \
+        err = driver.get_att(ncid,varp->vid,"_FillValue",&val);               \
     }                                                                         \
     else if (varp->xType == NC_INT) {                                         \
         int buf;                                                              \
-        err = driver.get_att(ncid,varp->vid,_FillValue,&buf);                 \
+        err = driver.get_att(ncid,varp->vid,"_FillValue",&buf);               \
         val = (float)buf;                                                     \
     }                                                                         \
     else if (varp->xType == NC_DOUBLE) {                                      \
         double buf;                                                           \
-        err = driver.get_att(ncid,varp->vid,_FillValue,&buf);                 \
+        err = driver.get_att(ncid,varp->vid,"_FillValue",&buf);               \
         val = (float)buf;                                                     \
     }                                                                         \
     CHECK_VAR_ERR(varp->_name)                                                \

src/e3sm_io.h

@@ -60,7 +60,6 @@
 #define NC_NOERR        0   /**< No Error */
 #define NC_GLOBAL 	-1
 #define NC_UNLIMITED 0L
-#define _FillValue      "_FillValue"
 
 typedef int nc_type;
 #endif

tests/icase_def.c

@@ -60,15 +60,15 @@ int main(int argc, char *argv[])
     ERR                                                                   \
     if (xtype == NC_FLOAT) {                                              \
         float buf = (float)val;                                           \
-        err = nc_put_att_float(ncid, varid, _FillValue, xtype, 1, &buf);  \
+        err = nc_put_att_float(ncid, varid, "_FillValue", xtype, 1, &buf);\
     }                                                                     \
     else if (xtype == NC_INT) {                                           \
         int buf = (int)val;                                               \
-        err = nc_put_att_int(ncid, varid, _FillValue, xtype, 1, &buf);    \
+        err = nc_put_att_int(ncid, varid, "_FillValue", xtype, 1, &buf);  \
     }                                                                     \
     else if (xtype == NC_DOUBLE) {                                        \
         double buf = (double)val;                                         \
-        err = nc_put_att_double(ncid, varid, _FillValue, xtype, 1, &buf); \
+        err = nc_put_att_double(ncid, varid,"_FillValue", xtype, 1, &buf);\
     }                                                                     \
     ERR                                                                   \
 }