1 files changed, 58 insertions, 0 deletions
diff --git a/cpukit/libmisc/stringto/stringtodouble.c b/cpukit/libmisc/stringto/stringtodouble.c
new file mode 100644
index 0000000000..ec50a1332b
--- /dev/null
+++ b/cpukit/libmisc/stringto/stringtodouble.c
@@ -0,0 +1,58 @@
+/*
+ *  COPYRIGHT (c) 2009.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  Copyright (c) 2011  Ralf Corsépius, Ulm, Germany.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <errno.h>
+#include <stdlib.h>
+#include <math.h>
+
+#include <rtems/stringto.h>
+
+/*
+ *  Instantiate an error checking wrapper for strtod (double)
+ */
+
+rtems_status_code rtems_string_to_double (
+  const char *s,
+  double *n,
+  char **endptr
+)
+{
+  double result;
+  char *end;
+
+  if ( !n )
+    return RTEMS_INVALID_ADDRESS;
+
+  errno = 0;
+  *n = 0;
+
+  result = strtod( s, &end );
+
+  if ( endptr )
+    *endptr = end;
+
+  if ( end == s )
+    return RTEMS_NOT_DEFINED;
+
+  if ( ( errno == ERANGE ) && 
+    (( result == 0 ) || ( result == HUGE_VAL ) || ( result == -HUGE_VAL )))
+      return RTEMS_INVALID_NUMBER;
+
+  *n = result;
+
+  return RTEMS_SUCCESSFUL;
+}