From 70cee4b82eb05b0979df7bd999be38ce3b12b76c Mon Sep 17 00:00:00 2001
From: "qiuyiuestc@gmail.com" <qiuyiuestc@gmail.com>
Date: Thu, 12 Jul 2012 22:42:06 +0000
Subject: [PATCH] add atol and isspace to minilibc.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2218 bbd45198-f89e-11dd-88c7-29a3b14d5316
---
 components/libc/minilibc/ctype.c  | 18 +++++++++++++++++-
 components/libc/minilibc/ctype.h  |  1 +
 components/libc/minilibc/stdlib.c | 17 +++++++++++++++++
 components/libc/minilibc/stdlib.h |  1 +
 4 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/components/libc/minilibc/ctype.c b/components/libc/minilibc/ctype.c
index 786ff472f8..4fd2dc8fb5 100644
--- a/components/libc/minilibc/ctype.c
+++ b/components/libc/minilibc/ctype.c
@@ -31,7 +31,23 @@ int isalpha(int ch)
 
 int isdigit (int ch)
 {
-    return (unsigned int)(ch - '0') < 10u;
+	return (unsigned int)(ch - '0') < 10u;
+}
+
+int isspace(int ch)
+{
+	switch(ch)
+	{
+	case ' ':
+	case '\n':
+	case '\f':
+	case '\r':
+	case '\t':
+	case '\v':
+		return 1;
+	default:
+		return 0; 
+	}    
 }
 
 #endif
diff --git a/components/libc/minilibc/ctype.h b/components/libc/minilibc/ctype.h
index 9a773b69ab..9909b4a0b0 100644
--- a/components/libc/minilibc/ctype.h
+++ b/components/libc/minilibc/ctype.h
@@ -17,5 +17,6 @@
 int isprint(int c) __attribute__ ((__const__));
 int isalpha (int c) __attribute__ ((__const__));
 int isdigit (int ch) __attribute__ ((__const__));
+int isspace(int ch) __attribute__ ((__const__));
 
 #endif
diff --git a/components/libc/minilibc/stdlib.c b/components/libc/minilibc/stdlib.c
index cac4ae5691..7185f56bb7 100644
--- a/components/libc/minilibc/stdlib.c
+++ b/components/libc/minilibc/stdlib.c
@@ -37,6 +37,23 @@ int atoi(const char* s)
 	return sign==-1?-v:v;
 }
 
+long int atol(const char* s) 
+{
+	long int v=0;
+	int sign=0;
+	while ( *s == ' '  ||  (unsigned int)(*s - 9) < 5u) ++s;
+	switch (*s) 
+	{
+		case '-': sign=-1;
+		case '+': ++s;
+	}
+	while ((unsigned int) (*s - '0') < 10u) 
+	{
+		v=v*10+*s-'0'; ++s;
+	}
+	return sign?-v:v;
+}
+
 void *malloc(size_t size)
 {
 	return rt_malloc(size);
diff --git a/components/libc/minilibc/stdlib.h b/components/libc/minilibc/stdlib.h
index 9ff5cdd86c..08f7e0d07b 100644
--- a/components/libc/minilibc/stdlib.h
+++ b/components/libc/minilibc/stdlib.h
@@ -19,6 +19,7 @@
 
 #if !defined (RT_USING_NEWLIB) && defined (RT_USING_MINILIBC)
 int atoi(const char *nptr);
+long int atol(const char *nptr);
 
 int rand(void);
 int rand_r(unsigned int *seed);
-- 
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