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import and define some missing functions from ape for schockolate

required by npe port of schockolate [1].

[1] https://github.com/Interrupt/systemshock

--- a/include/npe/math.h

+++ b/include/npe/math.h

@@ -32,6 +32,8 @@

 #define powf pow

 #define sqrtf sqrt

+#define	sqrtl sqrt

+

 double exp2(double);

 #define exp2f exp2

--- a/include/npe/stdlib.h

+++ b/include/npe/stdlib.h

@@ -22,6 +22,8 @@

 int mkstemp(char *t);

 div_t div(int n, int d);

+long long llabs(long long);

+

 void *bsearch(const void *key, const void *base, size_t nmemb, size_t size,

 		int (*compar)(const void*, const void*));

--- a/include/npe/string.h

+++ b/include/npe/string.h

@@ -6,5 +6,7 @@

 char *strerror(int errnum);

 int strerror_r(int errnum, char *buf, size_t buflen);

 size_t strlcpy(char *dst, char *src, size_t sz);

+size_t strnlen(char *s, size_t maxlen);

+char *strtok_r(char *s, char *b, char **last);

 #endif

--- a/include/npe/unistd.h

+++ b/include/npe/unistd.h

@@ -61,6 +61,7 @@

 int npe_stat(char *filename, struct stat *buf);

 int npe_fstat(int fd, struct stat *buf);

 int fstatat(int dirfd, char *path, struct stat *buf, int flags);

+int ftruncate(int fd, off_t length);

 int unlink(char *path);

 int access(char *name, int mode);

 void usleep(useconds_t us);

--- /dev/null

+++ b/libnpe/abs.c

@@ -1,0 +1,9 @@

+#include <stdlib.h>

+

+long long

+llabs(long long a)

+{

+	if(a < 0)

+		return -a;

+	return a;

+}

--- /dev/null

+++ b/libnpe/ftruncate.c

@@ -1,0 +1,20 @@

+#include <npe.h>

+#include <errno.h>

+

+int

+ftruncate(int fd, off_t length)

+{

+	Dir d;

+

+	if(length < 0){

+		errno = EINVAL;

+		return -1;

+	}

+	nulldir(&d);

+	d.length = length;

+	if(dirfwstat(fd, &d) < 0){

+		errno = ENOENT;

+		return -1;

+	}

+	return 0;

+}

--- a/libnpe/mkfile

+++ b/libnpe/mkfile

@@ -13,6 +13,7 @@

 	_main.$O\

 	_npe.$O\

 	_parg.$O\

+	abs.$O\

 	acosh.$O\

 	basename.$O\

 	bsearch.$O\

@@ -28,6 +29,7 @@

 	exp2.$O\

 	fmax.$O\

 	fstatat.$O\

+	ftruncate.$O\

 	fts_children.$O\

 	fts_close.$O\

 	fts_open.$O\

@@ -69,6 +71,8 @@

 	strerror_r.$O\

 	strftime.$O\

 	strlcpy.$O\

+	strnlen.$O\

+	strtok.$O\

 	system.$O\

 	trunc.$O\

 	unlink.$O\

--- /dev/null

+++ b/libnpe/strnlen.c

@@ -1,0 +1,11 @@

+#include <string.h>

+

+size_t

+strnlen(char *s, size_t maxlen)

+{

+	size_t i;

+

+	for (i = 0; i < maxlen && s[i] != '\0'; i++)

+		;

+	return i;

+}

--- /dev/null

+++ b/libnpe/strtok.c

@@ -1,0 +1,28 @@

+#include <string.h>

+

+#define	N	256

+

+char*

+strtok_r(char *s, char *b, char **last)

+{

+	char map[N], *os;

+

+	memset(map, 0, N);

+	while(*b)

+		map[*(unsigned char*)b++] = 1;

+	if(s == 0)

+		s = *last;

+	while(map[*(unsigned char*)s++])

+		;

+	if(*--s == 0)

+		return 0;

+	os = s;

+	while(map[*(unsigned char*)s] == 0)

+		if(*s++ == 0) {

+			*last = s-1;

+			return os;

+		}

+	*s++ = 0;

+	*last = s;

+	return os;

+}

-- 

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