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authorjwsblokland <J.W.S.Blokland@XS4All.nl>2020-12-02 04:27:24 (GMT)
committerGitHub <noreply@github.com>2020-12-02 04:27:24 (GMT)
commit82c0cb122f468c0d8d684da64a08acf50534bd02 (patch)
tree4b24401b926d5ed1792e7f8495ede8edd0d549b6 /src/H5Ztrans.c
parent7950dca75c353b5a8fe607b12f5195b3cfec76f4 (diff)
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(fix) H5Z_xform_create function and scientific notation (#144)
* (fix) H5Z_xform_create function and scientific notation Implemented a more sophisticated check to support scientific notation in the expression of the H5Zset_data_transform function. * (fix) H5Z_xform_create and scientific notation: Added test. Added a test to demonstrate that the parsing of expression which includes scientific notation works correctly. Improved inline comment. Co-authored-by: Jan-Willem Blokland <Jan-Willem.Blokland@Shell.com>
Diffstat (limited to 'src/H5Ztrans.c')
-rw-r--r--src/H5Ztrans.c42
1 files changed, 26 insertions, 16 deletions
diff --git a/src/H5Ztrans.c b/src/H5Ztrans.c
index cde1862..8a702fd 100644
--- a/src/H5Ztrans.c
+++ b/src/H5Ztrans.c
@@ -13,12 +13,12 @@
#include "H5Zmodule.h" /* This source code file is part of the H5Z module */
-#include "H5private.h" /* Generic Functions */
-#include "H5Eprivate.h" /* Error handling */
-#include "H5Iprivate.h" /* IDs */
-#include "H5MMprivate.h" /* Memory management */
-#include "H5VMprivate.h" /* H5VM_array_fill */
-#include "H5Zpkg.h" /* Data filters */
+#include "H5private.h" /* Generic Functions */
+#include "H5Eprivate.h" /* Error handling */
+#include "H5Iprivate.h" /* IDs */
+#include "H5MMprivate.h" /* Memory management */
+#include "H5VMprivate.h" /* H5VM_array_fill */
+#include "H5Zpkg.h" /* Data filters */
/* Token types */
typedef enum {
@@ -994,12 +994,12 @@ done:
/*-------------------------------------------------------------------------
* Function: H5Z_xform_eval
- * Purpose: If the transform is trivial, this function applies it.
- * Otherwise, it calls H5Z__xform_eval_full to do the full
- * transform.
+ * Purpose: If the transform is trivial, this function applies it.
+ * Otherwise, it calls H5Z__xform_eval_full to do the full
+ * transform.
* Return: SUCCEED if transform applied successfully, FAIL otherwise
* Programmer: Leon Arber
- * 5/1/04
+ * 5/1/04
*
*-------------------------------------------------------------------------
*/
@@ -1110,8 +1110,8 @@ done:
/*-------------------------------------------------------------------------
* Function: H5Z__xform_eval_full
*
- * Purpose: Does a full evaluation of the parse tree contained in tree
- * and applies this transform to array.
+ * Purpose: Does a full evaluation of the parse tree contained in tree
+ * and applies this transform to array.
*
* Notes: In the case of a polynomial data transform (ie, the left and right
* subtree are both of type H5Z_XFORM_SYMBOL), the convention is
@@ -1121,7 +1121,7 @@ done:
* Return: Nothing
*
* Programmer: Leon Arber
- * 5/1/04
+ * 5/1/04
*
*-------------------------------------------------------------------------
*/
@@ -1539,10 +1539,20 @@ H5Z_xform_create(const char *expr)
"unable to allocate memory for data transform expression")
/* Find the number of times "x" is used in this equation, and allocate room for storing that many points
+ * A more sophisticated check is needed to support scientific notation.
*/
- for (i = 0; i < HDstrlen(expr); i++)
- if (HDisalpha(expr[i]))
+ for (i = 0; i < HDstrlen(expr); i++) {
+ if (HDisalpha(expr[i])) {
+ if ((i > 0) && (i < (HDstrlen(expr) - 1))) {
+ if (((expr[i] == 'E') || (expr[i] == 'e')) &&
+ (HDisdigit(expr[i - 1]) || (expr[i - 1] == '.')) &&
+ (HDisdigit(expr[i + 1]) || (expr[i + 1] == '-') || (expr[i + 1] == '+')))
+ continue;
+ }
+
count++;
+ }
+ }
/* When there are no "x"'s in the equation (ie, simple transform case),
* we don't need to allocate any space since no array will have to be
@@ -1753,7 +1763,7 @@ H5Z_xform_noop(const H5Z_data_xform_t *data_xform_prop)
* Function: H5Z_xform_extract_xform_str
*
* Purpose: Extracts the pointer to the data transform strings from the
- * data transform property.`
+ * data transform property.`
* Return:
* Pointer to a copy of the string in the data_xform property.
*