From 9b3000e3296d2eefd2339b57f65085d16e905046 Mon Sep 17 00:00:00 2001
From: Zdenek Styblik <zdenek.styblik@gmail.com>
Date: Wed, 12 Dec 2012 05:39:35 +0000
Subject: [PATCH] 'lib/helper.c', 'include/ipmitool/helper.h' - add
 str2double()

Commit adds function to handle conversion from string to double. Function has
the same concept as other str2*() functions.
---
 ipmitool/include/ipmitool/helper.h |  1 +
 ipmitool/lib/helper.c              | 27 +++++++++++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/ipmitool/include/ipmitool/helper.h b/ipmitool/include/ipmitool/helper.h
index bc2bc02..1388d27 100644
--- a/ipmitool/include/ipmitool/helper.h
+++ b/ipmitool/include/ipmitool/helper.h
@@ -65,6 +65,7 @@ struct oemvalstr {
 const char * val2str(uint16_t val, const struct valstr * vs);
 const char * oemval2str(uint32_t oem,uint16_t val, const struct oemvalstr * vs);
 
+int str2double(const char * str, double * double_ptr);
 int str2long(const char * str, int64_t * lng_ptr);
 int str2ulong(const char * str, uint64_t * ulng_ptr);
 int str2int(const char * str, int32_t * int_ptr);
diff --git a/ipmitool/lib/helper.c b/ipmitool/lib/helper.c
index 73df753..49d5890 100644
--- a/ipmitool/lib/helper.c
+++ b/ipmitool/lib/helper.c
@@ -145,6 +145,33 @@ const char * oemval2str(uint32_t oem, uint16_t val,
 	return un_str;
 }
 
+/* str2double - safely convert string to double
+ *
+ * @str: source string to convert from
+ * @double_ptr: pointer where to store result
+ *
+ * returns zero on success
+ * returns (-1) if one of args is NULL, (-2) invalid input, (-3) for *flow
+ */
+int str2double(const char * str, double * double_ptr)
+{
+	char * end_ptr = 0;
+	if (!str || !double_ptr)
+		return (-1);
+
+	*double_ptr = 0;
+	errno = 0;
+	*double_ptr = strtod(str, &end_ptr);
+
+	if (*end_ptr != '\0')
+		return (-2);
+
+	if (errno != 0)
+		return (-3);
+
+	return 0;
+} /* str2double(...) */
+
 /* str2long - safely convert string to int64_t
  *
  * @str: source string to convert from