new function gf_string2double for float/double values

fixed warning

Signed-off-by: Anand V. Avati <avati@amp.gluster.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/libglusterfs/src/common-utils.c b/libglusterfs/src/common-utils.c
index 616c7a8ce68..acac5e05281 100644
--- a/libglusterfs/src/common-utils.c
+++ b/libglusterfs/src/common-utils.c
@@ -796,6 +796,39 @@ _gf_string2uint (const char *str, unsigned int *n, int base)
 }
 
 static int 
+_gf_string2double (const char *str, double *n)
+{
+	double value     = 0.0;
+	char   *tail     = NULL;
+	int    old_errno = 0;
+  
+	if (str == NULL || n == NULL) {
+		errno = EINVAL;
+		return -1;
+	}
+  
+	old_errno = errno;
+	errno = 0;
+	value = strtod (str, &tail);
+  
+	if (errno == ERANGE || errno == EINVAL)	{
+		return -1;
+	}
+  
+	if (errno == 0)	{
+		errno = old_errno;
+	}
+  
+	if (tail[0] != '\0') {
+		return -1;
+	}
+  
+	*n = value;
+  
+	return 0;
+}
+
+static int 
 _gf_string2longlong (const char *str, long long *n, int base)
 {
 	long long value = 0;
@@ -911,6 +944,12 @@ gf_string2uint (const char *str, unsigned int *n)
 	return _gf_string2uint (str, n, 0);
 }
 
+int
+gf_string2double (const char *str, double *n)
+{
+	return _gf_string2double (str, n);
+}
+
 int 
 gf_string2longlong (const char *str, long long *n)
 {