From 392eb518d5e6dc5e0e7bb5c24a399c453c5a7b64 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Axel=20D=C3=B6rfler?= <axeld@pinc-software.de>
Date: Wed, 6 Feb 2008 17:11:02 +0000
Subject: [PATCH] * Added gcvt() implementation - this fixes bug #1757. * Added
 gcvt(), ecvt(), and fcvt() prototypes to stdlib.h - they are all   marked
 legacy, but are still part of the POSIX standard, so we might want   to
 implement them if the need arises.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23896 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 headers/posix/stdlib.h                  | 22 ++++++++++++++++------
 src/system/libroot/posix/stdlib/Jamfile |  1 +
 src/system/libroot/posix/stdlib/gcvt.c  | 18 ++++++++++++++++++
 3 files changed, 35 insertions(+), 6 deletions(-)
 create mode 100644 src/system/libroot/posix/stdlib/gcvt.c

diff --git a/headers/posix/stdlib.h b/headers/posix/stdlib.h
index 7db19888ea..74962b5fc1 100644
--- a/headers/posix/stdlib.h
+++ b/headers/posix/stdlib.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2007, Haiku Inc. All Rights Reserved.
+ * Copyright 2002-2008, Haiku Inc. All Rights Reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef _STDLIB_H_
@@ -66,6 +66,11 @@ extern int		system(const char *command);
 extern char		*mktemp(char *name);
 extern int		mkstemp(char *templat);
 
+extern char		*ecvt(double value, int digits, int *_decimalPoint, int *_sign);
+extern char		*fcvt(double value, int precision, int *_decimalPoint,
+					int *_sign);
+extern char		*gcvt(double value, int digits, char *buffer);
+
 /* environment variables */
 extern char		**environ;
 extern char		*getenv(const char *name);
@@ -131,11 +136,16 @@ typedef int (*_compare_function)(const void *, const void *);
 
 extern void		*bsearch(const void *key, const void *base, size_t numElements,
 					size_t sizeOfElement, _compare_function);
-extern int		heapsort(void *base, size_t numElements, size_t sizeOfElement, _compare_function);
-extern int		mergesort(void *base, size_t numElements, size_t sizeOfElement, _compare_function);
-extern void		qsort(void *base, size_t numElements, size_t sizeOfElement, _compare_function);
-extern int		radixsort(u_char const **base, int numElements, u_char const *table, u_int endByte);
-extern int		sradixsort(u_char const **base, int numElements, u_char const *table, u_int endByte);
+extern int		heapsort(void *base, size_t numElements, size_t sizeOfElement,
+					_compare_function);
+extern int		mergesort(void *base, size_t numElements, size_t sizeOfElement,
+					_compare_function);
+extern void		qsort(void *base, size_t numElements, size_t sizeOfElement,
+					_compare_function);
+extern int		radixsort(u_char const **base, int numElements,
+					u_char const *table, u_int endByte);
+extern int		sradixsort(u_char const **base, int numElements,
+					u_char const *table, u_int endByte);
 
 /* misc math functions */
 extern int		abs(int number);
diff --git a/src/system/libroot/posix/stdlib/Jamfile b/src/system/libroot/posix/stdlib/Jamfile
index 7ae28698c6..fc28ed3799 100644
--- a/src/system/libroot/posix/stdlib/Jamfile
+++ b/src/system/libroot/posix/stdlib/Jamfile
@@ -12,6 +12,7 @@ MergeObject posix_stdlib.o :
 	div.c 
 	env.c
 	exit.c
+	gcvt.c
 	heapsort.c 
 	merge.c
 	mktemp.c
diff --git a/src/system/libroot/posix/stdlib/gcvt.c b/src/system/libroot/posix/stdlib/gcvt.c
new file mode 100644
index 0000000000..eec02e81fc
--- /dev/null
+++ b/src/system/libroot/posix/stdlib/gcvt.c
@@ -0,0 +1,18 @@
+/*
+ * Copyright 2008, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include <stdlib.h>
+
+
+char *
+gcvt(double value, int digits, char *buffer)
+{
+	sprintf(buffer, "%.*g", digits, value);
+	return buffer;
+}
+
+
+// TODO: eventually add ecvt(), and fcvt() as well, if needed.