several additions to libroot:

added abs.c (abs, labs)
  added div.c (div, ldiv)
  added abort() to exit.c


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1636 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kernel/Jamfile

@@ -253,9 +253,11 @@ KernelStaticLibraryObjects libc.a :
 	<$(SOURCE_GRIST)!libroot!posix!stdio>wbuf.o
 	<$(SOURCE_GRIST)!libroot!posix!stdio>wsetup.o
 
-	<$(SOURCE_GRIST)!libroot!posix!stdlib>assert.o
+	<$(SOURCE_GRIST)!libroot!posix!stdlib>abs.o
+	<$(SOURCE_GRIST)!libroot!posix!stdlib>assert.o	
 	<$(SOURCE_GRIST)!libroot!posix!stdlib>atoi.o
 	<$(SOURCE_GRIST)!libroot!posix!stdlib>bsearch.o
+	<$(SOURCE_GRIST)!libroot!posix!stdlib>div.o
 	<$(SOURCE_GRIST)!libroot!posix!stdlib>env.o
 	<$(SOURCE_GRIST)!libroot!posix!stdlib>exit.o
 	<$(SOURCE_GRIST)!libroot!posix!stdlib>heapsort.o
@@ -398,9 +400,11 @@ KernelLd libroot.so :
 	<$(SOURCE_GRIST)!libroot!posix!stdio>wbuf.o
 	<$(SOURCE_GRIST)!libroot!posix!stdio>wsetup.o
 
-	<$(SOURCE_GRIST)!libroot!posix!stdlib>assert.o
+	<$(SOURCE_GRIST)!libroot!posix!stdlib>abs.o
+	<$(SOURCE_GRIST)!libroot!posix!stdlib>assert.o	
 	<$(SOURCE_GRIST)!libroot!posix!stdlib>atoi.o
 	<$(SOURCE_GRIST)!libroot!posix!stdlib>bsearch.o
+	<$(SOURCE_GRIST)!libroot!posix!stdlib>div.o
 	<$(SOURCE_GRIST)!libroot!posix!stdlib>env.o
 	<$(SOURCE_GRIST)!libroot!posix!stdlib>exit.o
 	<$(SOURCE_GRIST)!libroot!posix!stdlib>heapsort.o

src/kernel/libroot/posix/stdlib/Jamfile

@@ -1,9 +1,11 @@
 SubDir OBOS_TOP src kernel libroot posix stdlib ;
 
 KernelObjects 
+	<$(SOURCE_GRIST)>abs.c
 	<$(SOURCE_GRIST)>assert.c 
 	<$(SOURCE_GRIST)>atoi.c 
 	<$(SOURCE_GRIST)>bsearch.c
+	<$(SOURCE_GRIST)>div.c 
 	<$(SOURCE_GRIST)>env.c
 	<$(SOURCE_GRIST)>exit.c
 	<$(SOURCE_GRIST)>heapsort.c 

src/kernel/libroot/posix/stdlib/abs.c

@@ -0,0 +1,36 @@
+/*
+ *  Copyright (c) 2002, OpenBeOS Project.
+ *  All rights reserved.
+ *  Distributed under the terms of the OpenBeOS license.
+ *
+ *
+ *  abs.c:
+ *  implements the standard C library functions:
+ *    abs, labs
+ *
+ *
+ *  Author(s):
+ *  Daniel Reinhold ([email protected])
+ *
+ */
+
+
+// ToDo: these are supposed to be declared in <stdlib.h>
+// - - - - - - - - - - - - - - - 
+int  abs(int);
+long labs(long);
+// - - - - - - - - - - - - - - -
+
+
+int
+abs(int i)
+{
+	return ((i < 0) ? -i : i);
+}
+
+
+long
+labs(long i)
+{
+	return ((i < 0) ? -i : i);
+}

src/kernel/libroot/posix/stdlib/div.c

@@ -0,0 +1,58 @@
+/*
+ *  Copyright (c) 2002, OpenBeOS Project.
+ *  All rights reserved.
+ *  Distributed under the terms of the OpenBeOS license.
+ *
+ *
+ *  div.c:
+ *  implements the standard C library functions:
+ *    div, ldiv
+ *
+ *
+ *  Author(s):
+ *  Daniel Reinhold ([email protected])
+ *
+ */
+
+
+// ToDo: these are supposed to be declared in <stdlib.h>
+// - - - - - - - - - - - - - - -
+#include <div_t.h>
+div_t	div(int, int);
+ldiv_t	ldiv(long, long);
+// - - - - - - - - - - - - - - -
+
+
+div_t
+div(int numerator, int denominator)
+{
+	div_t val;
+	
+	val.quot = numerator / denominator;
+	val.rem  = numerator - denominator * val.quot;
+	
+	if ((val.rem > 0) && (val.quot < 0)) {
+		val.rem -= denominator;
+		++val.quot;
+	}
+
+	return val;
+}
+
+
+ldiv_t
+ldiv(long numerator, long denominator)
+{
+	ldiv_t val;
+	
+	val.quot = numerator / denominator;
+	val.rem  = numerator - denominator * val.quot;
+	
+	if ((val.rem > 0) && (val.quot < 0)) {
+		val.rem -= denominator;
+		++val.quot;
+	}
+
+	return val;
+}
+

src/kernel/libroot/posix/stdlib/exit.c

@@ -1,39 +1,59 @@
 /*
- * Copyright (c) 2002, OpenBeOS Project
- *
- * This file is part of the OpenBeOS system interface.
- * It is distributed under the terms of the OpenBeOS license.
+ *  Copyright (c) 2002, OpenBeOS Project.
+ *  All rights reserved.
+ *  Distributed under the terms of the OpenBeOS license. 
  *
  *
- * Author(s):
- * Daniel Reinhold ([email protected])
+ *  exit.c:
+ *  implements the standard C library functions:
+ *    abort, atexit, exit
+ *
+ *
+ *  Author(s):
+ *  Daniel Reinhold ([email protected])
  *
  */
 
 #include <syscalls.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <signal.h>
+#include <limits.h>
 
 // ToDo: move this puppy to a more standard location
 #include "../stdio/local.h"
 
-// ToDo: this is supposed to be declared in <stdlib.h>
+// ToDo: these are supposed to be declared in <stdlib.h>
+// - - - - - - - - - - - - - - - 
+#define EXIT_SUCCESS  0
+#define EXIT_FAILURE  1
+void abort(void); 
 int  atexit(void (*func)(void));
+// - - - - - - - - - - - - - - - 
 
 
 
-#define _EXIT_STACK_SIZE_ 32
-
-static void (*_Exit_Stack[_EXIT_STACK_SIZE_])(void) = {0};
+static void (*_Exit_Stack[ATEXIT_MAX])(void) = {0};
 static int    _Exit_SP = 0;
 
 
+
+void
+abort()
+{
+	// ToDo: uncomment the raise() call once it is implemented
+	
+	//raise(SIGABRT);
+	exit(EXIT_FAILURE);
+}
+
+
 int
 atexit(void (*func)(void))
 {
 	// push the function pointer onto the exit stack
 	
-	if (_Exit_SP < _EXIT_STACK_SIZE_) {
+	if (_Exit_SP < ATEXIT_MAX) {
 		_Exit_Stack[_Exit_SP++] = func;
 		return 0;
 	}