diff --git a/Makefile b/Makefile
index e2d6d58..f1e1b1e 100644
--- a/Makefile
+++ b/Makefile
@@ -3,8 +3,9 @@ all: t byte.a fmt.a scan.a str.a uint.a open.a stralloc.a unix.a socket.a buffer
 VPATH=str:byte:fmt:scan:uint:open:stralloc:unix:socket:buffer:mmap
 
 CC=gcc
+CFLAGS=-I. -pipe -Wall -O2 -pipe -fomit-frame-pointer
 #CFLAGS=-I. -pipe -Wall -Os -march=pentiumpro -fomit-frame-pointer -fschedule-insns2 -Wall
-CFLAGS=-I. -I../dietlibc/include -pipe -Wall -Os -malign-functions=2 -fschedule-insns2 -g
+#CFLAGS=-I. -I../dietlibc/include -pipe -Wall -Os -malign-functions=2 -fschedule-insns2 -g
 #CFLAGS=-I../dietlibc/include -I. -pipe -Wall -Os -march=pentiumpro -mcpu=athlon -fomit-frame-pointer -fschedule-insns2 -Wall
 #CFLAGS=-I../dietlibc/include -pipe -Os -march=pentiumpro -mcpu=pentiumpro -fomit-frame-pointer -fschedule-insns2 -Wall
 
diff --git a/byte.h b/byte.h
index c3b3f02..e598124 100644
--- a/byte.h
+++ b/byte.h
@@ -6,35 +6,32 @@
 #ifndef __pure__
 #define __pure__
 #endif
-#ifndef __THROW
-#define __THROW
-#endif
 
 /* byte_chr returns the smallest integer i between 0 and len-1
  * inclusive such that one[i] equals needle, or len it not found. */
-unsigned int byte_chr(const void* haystack, unsigned int len, char needle) __THROW __pure__;
+unsigned int byte_chr(const void* haystack, unsigned int len, char needle) __pure__;
 
 /* byte_rchr returns the largest integer i between 0 and len-1 inclusive
  * such that one[i] equals needle, or len if not found. */
-unsigned int byte_rchr(const void* haystack,unsigned int len,char needle) __THROW __pure__;
+unsigned int byte_rchr(const void* haystack,unsigned int len,char needle) __pure__;
 
 /* byte_copy copies in[0] to out[0], in[1] to out[1], ... and in[len-1]
  * to out[len-1]. */
-void byte_copy(void* out, unsigned int len, const void* in) __THROW;
+void byte_copy(void* out, unsigned int len, const void* in);
 
 /* byte_copyr copies in[len-1] to out[len-1], in[len-2] to out[len-2],
  * ... and in[0] to out[0] */
-void byte_copyr(void* out, unsigned int len, const void* in) __THROW;
+void byte_copyr(void* out, unsigned int len, const void* in);
 
 /* byte_diff returns negative, 0, or positive, depending on whether the
  * string a[0], a[1], ..., a[len-1] is lexicographically smaller
  * than, equal to, or greater than the string b[0], b[1], ...,
  * b[len-1]. When the strings are different, byte_diff does not read
  * bytes past the first difference. */
-int byte_diff(const void* a, unsigned int len, const void* b) __THROW __pure__;
+int byte_diff(const void* a, unsigned int len, const void* b) __pure__;
 
 /* byte_zero sets the bytes out[0], out[1], ..., out[len-1] to 0 */
-void byte_zero(void* out, unsigned len) __THROW;
+void byte_zero(void* out, unsigned len);
 
 #define byte_equal(s,n,t) (!byte_diff((s),(n),(t)))
 
diff --git a/fmt.h b/fmt.h
index 7a61af0..9efc5a1 100644
--- a/fmt.h
+++ b/fmt.h
@@ -13,19 +13,19 @@
 
 /* convert signed src integer -23 to ASCII '-','2','3', return length.
  * If dest is not NULL, write result to dest */
-unsigned int fmt_long(char *dest,signed long src) __THROW;
+unsigned int fmt_long(char *dest,signed long src);
 
 /* convert unsigned src integer 23 to ASCII '2','3', return length.
  * If dest is not NULL, write result to dest */
-unsigned int fmt_ulong(char *dest,unsigned long src) __THROW;
+unsigned int fmt_ulong(char *dest,unsigned long src);
 
 /* convert unsigned src integer 0x23 to ASCII '2','3', return length.
  * If dest is not NULL, write result to dest */
-unsigned int fmt_xlong(char *dest,unsigned long src) __THROW;
+unsigned int fmt_xlong(char *dest,unsigned long src);
 
 /* convert unsigned src integer 023 to ASCII '2','3', return length.
  * If dest is not NULL, write result to dest */
-unsigned int fmt_8long(char *dest,unsigned long src) __THROW;
+unsigned int fmt_8long(char *dest,unsigned long src);
 
 #define fmt_uint(dest,src) fmt_ulong(dest,src)
 #define fmt_int(dest,src) fmt_long(dest,src)
@@ -34,40 +34,40 @@ unsigned int fmt_8long(char *dest,unsigned long src) __THROW;
 
 /* Like fmt_ulong, but prepend '0' while length is smaller than padto.
  * Does not truncate! */
-unsigned int fmt_ulong0(char *,unsigned long src,unsigned int padto) __THROW;
+unsigned int fmt_ulong0(char *,unsigned long src,unsigned int padto);
 
 #define fmt_uint0(buf,src,padto) fmt_ulong0(buf,src,padto)
 
 /* convert src double 1.7 to ASCII '1','.','7', return length.
  * If dest is not NULL, write result to dest */
-unsigned int fmt_double(char *dest, double d,int max,int prec) __THROW;
+unsigned int fmt_double(char *dest, double d,int max,int prec);
 
 /* if src is negative, write '-' and return 1.
  * if src is positive, write '+' and return 1.
  * otherwise return 0 */
-unsigned int fmt_plusminus(char *dest,int src) __THROW;
+unsigned int fmt_plusminus(char *dest,int src);
 
 /* if src is negative, write '-' and return 1.
  * otherwise return 0. */
-unsigned int fmt_minus(char *dest,int src) __THROW;
+unsigned int fmt_minus(char *dest,int src);
 
 /* copy str to dest until \0 byte, return number of copied bytes. */
-unsigned int fmt_str(char *dest,const char *src) __THROW;
+unsigned int fmt_str(char *dest,const char *src);
 
 /* copy str to dest until \0 byte or limit bytes copied.
  * return number of copied bytes. */
-unsigned int fmt_strn(char *dest,const char *src,unsigned int limit) __THROW;
+unsigned int fmt_strn(char *dest,const char *src,unsigned int limit);
 
 /* "foo" -> "  foo"
  * write padlen-srclen spaces, if that is >= 0.  Then copy srclen
  * characters from src.  Truncate only if total length is larger than
  * maxlen.  Return number of characters written. */
-unsigned int fmt_pad(char* dest,const char* src,unsigned int srclen,unsigned int padlen,unsigned int maxlen) __THROW;
+unsigned int fmt_pad(char* dest,const char* src,unsigned int srclen,unsigned int padlen,unsigned int maxlen);
 
 /* "foo" -> "foo  "
  * append padlen-srclen spaces after dest, if that is >= 0.  Truncate
  * only if total length is larger than maxlen.  Return number of
  * characters written. */
-unsigned int fmt_fill(char* dest,unsigned int srclen,unsigned int padlen,unsigned int maxlen) __THROW;
+unsigned int fmt_fill(char* dest,unsigned int srclen,unsigned int padlen,unsigned int maxlen);
 
 #endif
diff --git a/mmap.h b/mmap.h
index 5e245c5..0a9a0e2 100644
--- a/mmap.h
+++ b/mmap.h
@@ -1,19 +1,17 @@
 #ifndef MMAP_H
 #define MMAP_H
 
-#include <sys/cdefs.h>
-
 /* open file for reading, mmap whole file, close file, write length of
  * map in filesize and return pointer to map. */
-extern char* mmap_read(const char *filename,unsigned long* filesize) __THROW;
+extern char* mmap_read(const char *filename,unsigned long* filesize);
 
 /* open file for writing, mmap whole file privately (copy on write),
  * close file, write length of map in filesize and return pointer to
  * map. */
-extern int mmap_write(const char *filename,unsigned long* filesize) __THROW;
+extern int mmap_write(const char *filename,unsigned long* filesize);
 
 /* open file for writing, mmap whole file shared, close file, write
  * length of map in filesize and return pointer to map. */
-extern int mmap_shared(const char *filename,unsigned long* filesize) __THROW;
+extern int mmap_shared(const char *filename,unsigned long* filesize);
 
 #endif
diff --git a/open.h b/open.h
index 6bd1358..aa16098 100644
--- a/open.h
+++ b/open.h
@@ -1,29 +1,27 @@
 #ifndef OPEN_H
 #define OPEN_H
 
-#include <sys/cdefs.h>
-
 /* open filename for reading and return the file handle or -1 on error */
-extern int open_read(const char *filename) __THROW;
+extern int open_read(const char *filename);
 
 /* create filename for exclusive write only use (mode 0600) and return
  * the file handle or -1 on error */
-extern int open_excl(const char *filename) __THROW;
+extern int open_excl(const char *filename);
 
 /* open filename for appending  write only use (mode 0600)
  * and return the file handle or -1 on error.
  * All write operation will append after the last byte, regardless of
  * seeking or other processes also appending to the file.  The file will
  * be created if it does not exist. */
-extern int open_append(const char *filename) __THROW;
+extern int open_append(const char *filename);
 
 /* open filename for writing (mode 0644).  Create the file if it does
  * not exist, truncate it to zero length otherwise.  Return the file
  * handle or -1 on error. */
-extern int open_trunc(const char *filename) __THROW;
+extern int open_trunc(const char *filename);
 
 /* open filename for writing.  Create the file if it does not exist.
  * Return the file handle or -1 on error. */
-extern int open_write(const char *filename) __THROW;
+extern int open_write(const char *filename);
 
 #endif
diff --git a/scan.h b/scan.h
index bd773b5..d2d2fd3 100644
--- a/scan.h
+++ b/scan.h
@@ -5,57 +5,54 @@
 #ifndef __pure__
 #define __pure__
 #endif
-#ifndef __THROW
-#define __THROW
-#endif
 
 /* interpret src as ASCII decimal number, write number to dest and
  * return the number of bytes that were parsed */
-extern unsigned int scan_ulong(const char *src,unsigned long *dest) __THROW;
+extern unsigned int scan_ulong(const char *src,unsigned long *dest);
 
 /* interpret src as ASCII hexadecimal number, write number to dest and
  * return the number of bytes that were parsed */
-extern unsigned int scan_xlong(const char *src,unsigned long *dest) __THROW;
+extern unsigned int scan_xlong(const char *src,unsigned long *dest);
 
 /* interpret src as ASCII octal number, write number to dest and
  * return the number of bytes that were parsed */
-extern unsigned int scan_8long(const char *src,unsigned long *dest) __THROW;
+extern unsigned int scan_8long(const char *src,unsigned long *dest);
 
 /* interpret src as signed ASCII decimal number, write number to dest
  * and return the number of bytes that were parsed */
-extern unsigned int scan_long(const char *src,signed long *dest) __THROW;
+extern unsigned int scan_long(const char *src,signed long *dest);
 
-extern unsigned int scan_uint(const char *src,unsigned int *dest) __THROW;
-extern unsigned int scan_xint(const char *src,unsigned int *dest) __THROW;
-extern unsigned int scan_8int(const char *src,unsigned int *dest) __THROW;
-extern unsigned int scan_int(const char *src,signed int *dest) __THROW;
+extern unsigned int scan_uint(const char *src,unsigned int *dest);
+extern unsigned int scan_xint(const char *src,unsigned int *dest);
+extern unsigned int scan_8int(const char *src,unsigned int *dest);
+extern unsigned int scan_int(const char *src,signed int *dest);
 
-extern unsigned int scan_ushort(const char *src,unsigned short *dest) __THROW;
-extern unsigned int scan_xshort(const char *src,unsigned short *dest) __THROW;
-extern unsigned int scan_8short(const char *src,unsigned short *dest) __THROW;
-extern unsigned int scan_short(const char *src,signed short *dest) __THROW;
+extern unsigned int scan_ushort(const char *src,unsigned short *dest);
+extern unsigned int scan_xshort(const char *src,unsigned short *dest);
+extern unsigned int scan_8short(const char *src,unsigned short *dest);
+extern unsigned int scan_short(const char *src,signed short *dest);
 
 /* interpret src as double precision floating point number,
  * write number to dest and return the number of bytes that were parsed */
-extern unsigned int scan_double(const char *in, double *dest) __THROW;
+extern unsigned int scan_double(const char *in, double *dest);
 
 /* if *src=='-', set *dest to -1 and return 1.
  * if *src=='+', set *dest to 1 and return 1.
  * otherwise set *dest to 1 return 0. */
-extern unsigned int scan_plusminus(const char *src,signed int *dest) __THROW;
+extern unsigned int scan_plusminus(const char *src,signed int *dest);
 
 /* return the highest integer n<=limit so that isspace(in[i]) for all 0<=i<=n */
-extern unsigned int scan_whitenskip(const char *in,unsigned int limit) __THROW __pure__;
+extern unsigned int scan_whitenskip(const char *in,unsigned int limit) __pure__;
 
 /* return the highest integer n<=limit so that !isspace(in[i]) for all 0<=i<=n */
-extern unsigned int scan_nonwhitenskip(const char *in,unsigned int limit) __THROW __pure__;
+extern unsigned int scan_nonwhitenskip(const char *in,unsigned int limit) __pure__;
 
 /* return the highest integer n<=limit so that in[i] is element of
  * charset (ASCIIZ string) for all 0<=i<=n */
-extern unsigned int scan_charsetnskip(const char *in,const char *charset,unsigned int limit) __THROW __pure__;
+extern unsigned int scan_charsetnskip(const char *in,const char *charset,unsigned int limit) __pure__;
 
 /* return the highest integer n<=limit so that in[i] is not element of
  * charset (ASCIIZ string) for all 0<=i<=n */
-extern unsigned int scan_noncharsetnskip(const char *in,const char *charset,unsigned int limit) __THROW __pure__;
+extern unsigned int scan_noncharsetnskip(const char *in,const char *charset,unsigned int limit) __pure__;
 
 #endif
diff --git a/str.h b/str.h
index 749def1..5d59345 100644
--- a/str.h
+++ b/str.h
@@ -5,20 +5,17 @@
 #ifndef __pure__
 #define __pure__
 #endif
-#ifndef __THROW
-#define __THROW
-#endif
 
 /* str_copy copies leading bytes from in to out until \0.
  * return number of copied bytes. */
-extern unsigned int str_copy(char *out,const char *in) __THROW;
+extern unsigned int str_copy(char *out,const char *in);
 
 /* str_diff returns negative, 0, or positive, depending on whether the
  * string a[0], a[1], ..., a[n]=='\0' is lexicographically smaller than,
  * equal to, or greater than the string b[0], b[1], ..., b[m-1]=='\0'.
  * If the strings are different, str_diff does not read bytes past the
  * first difference. */
-extern int str_diff(const char *a,const char *b) __THROW __pure__;
+extern int str_diff(const char *a,const char *b) __pure__;
 
 /* str_diffn returns negative, 0, or positive, depending on whether the
  * string a[0], a[1], ..., a[n]=='\0' is lexicographically smaller than,
@@ -26,19 +23,19 @@ extern int str_diff(const char *a,const char *b) __THROW __pure__;
  * If the strings are different, str_diffn does not read bytes past the
  * first difference. The strings will be considered equal if the first
  * limit characters match. */
-extern int str_diffn(const char *a,const char *b,unsigned int limit) __THROW __pure__;
+extern int str_diffn(const char *a,const char *b,unsigned int limit) __pure__;
 
 /* str_len returns the index of \0 in s */
-extern unsigned int str_len(const char *s) __THROW __pure__;
+extern unsigned int str_len(const char *s) __pure__;
 
 /* str_chr returns the index of the first occurance of needle or \0 in haystack */
-extern unsigned int str_chr(const char *haystack,char needle) __THROW __pure__;
+extern unsigned int str_chr(const char *haystack,char needle) __pure__;
 
 /* str_rchr returns the index of the last occurance of needle or \0 in haystack */
-extern unsigned int str_rchr(const char *haystack,char needle) __THROW __pure__;
+extern unsigned int str_rchr(const char *haystack,char needle) __pure__;
 
 /* str_start returns 1 if the b is a prefix of a, 0 otherwise */
-extern int str_start(const char *a,const char *b) __THROW __pure__;
+extern int str_start(const char *a,const char *b) __pure__;
 
 /* convenience shortcut to test for string equality */
 #define str_equal(s,t) (!str_diff((s),(t)))
diff --git a/stralloc.h b/stralloc.h
index 57e12ca..1999fa4 100644
--- a/stralloc.h
+++ b/stralloc.h
@@ -15,60 +15,60 @@ typedef struct stralloc {
  * not enough to hold len bytes, stralloc_ready allocates at least len
  * bytes of space, copies the old string into the new space, frees the
  * old space, and returns 1. Note that this changes sa.s. */
-extern int stralloc_ready(stralloc* sa,unsigned int len) __THROW;
+extern int stralloc_ready(stralloc* sa,unsigned int len);
 
 /* stralloc_readyplus is like stralloc_ready except that, if sa is
  * already allocated, stralloc_readyplus adds the current length of sa
  * to len. */
-extern int stralloc_readyplus(stralloc* sa,unsigned int len) __THROW;
+extern int stralloc_readyplus(stralloc* sa,unsigned int len);
 
 /* stralloc_copyb copies the string buf[0], buf[1], ..., buf[len-1] into
  * sa, allocating space if necessary, and returns 1. If it runs out of
  * memory, stralloc_copyb leaves sa alone and returns 0. */
-extern int stralloc_copyb(stralloc* sa,const char* buf,unsigned int len) __THROW;
+extern int stralloc_copyb(stralloc* sa,const char* buf,unsigned int len);
 
 /* stralloc_copys copies a \0-terminated string from buf into sa,
  * without the \0. It is the same as
  * stralloc_copyb(&sa,buf,str_len(buf)). */
-extern int stralloc_copys(stralloc* sa,const char* buf) __THROW;
+extern int stralloc_copys(stralloc* sa,const char* buf);
 
 /* stralloc_copy copies the string stored in sa2 into sa. It is the same
  * as stralloc_copyb(&sa,sa2.s,sa2.len). sa2 must already be allocated. */
-extern int stralloc_copy(stralloc* sa,stralloc* sa2) __THROW;
+extern int stralloc_copy(stralloc* sa,stralloc* sa2);
 
 /* stralloc_catb adds the string buf[0], buf[1], ... buf[len-1] to the
  * end of the string stored in sa, allocating space if necessary, and
  * returns 1. If sa is unallocated, stralloc_catb is the same as
  * stralloc_copyb. If it runs out of memory, stralloc_catb leaves sa
  * alone and returns 0. */
-extern int stralloc_catb(stralloc* sa,const char* in,unsigned int len) __THROW;
+extern int stralloc_catb(stralloc* sa,const char* in,unsigned int len);
 
 /* stralloc_cats is analogous to stralloc_copys */
-extern int stralloc_cats(stralloc* sa,const char* in) __THROW;
+extern int stralloc_cats(stralloc* sa,const char* in);
 
 /* stralloc_cat is analogous to stralloc_copy */
-extern int stralloc_cat(stralloc* sa,stralloc* in) __THROW;
+extern int stralloc_cat(stralloc* sa,stralloc* in);
 
 /* stralloc_append adds one byte buf[0] to the end of the string stored
  * in sa. It is the same as stralloc_catb(&sa,buf,1). */
-extern int stralloc_append(stralloc* sa,const char* in) __THROW; /* beware: this takes a pointer to 1 char */
+extern int stralloc_append(stralloc* sa,const char* in); /* beware: this takes a pointer to 1 char */
 
 /* stralloc_starts returns 1 if the \0-terminated string in buf, without
  * the terminating \0, is a prefix of the string stored in sa. Otherwise
  * it returns 0. sa must already be allocated. */
-extern int stralloc_starts(stralloc* sa,const char* in) __THROW;
+extern int stralloc_starts(stralloc* sa,const char* in);
 
 /* stralloc_0 appends \0 */
 #define stralloc_0(sa) stralloc_append(sa,"")
 
 /* stralloc_catulong0 appends a '0' padded ASCII representation of in */
-extern int stralloc_catulong0(stralloc* sa,unsigned long in,unsigned int n) __THROW;
+extern int stralloc_catulong0(stralloc* sa,unsigned long in,unsigned int n);
 
 /* stralloc_catlong0 appends a '0' padded ASCII representation of in */
-extern int stralloc_catlong0(stralloc* sa,signed long in,unsigned int n) __THROW;
+extern int stralloc_catlong0(stralloc* sa,signed long in,unsigned int n);
 
 /* stralloc_free frees the storage associated with sa */
-extern void stralloc_free(stralloc* sa) __THROW;
+extern void stralloc_free(stralloc* sa);
 
 #define stralloc_catlong(sa,l) (stralloc_catlong0((sa),(l),0))
 #define stralloc_catuint0(sa,i,n) (stralloc_catulong0((sa),(i),(n)))
diff --git a/uint16.h b/uint16.h
index 1b7f07a..53ba710 100644
--- a/uint16.h
+++ b/uint16.h
@@ -6,10 +6,10 @@
 typedef unsigned short uint16;
 
 #ifdef NO_UINT16_MACROS
-extern void uint16_pack(char *out,uint16 in) __THROW;
-extern void uint16_pack_big(char *out,uint16 in) __THROW;
-extern void uint16_unpack(const char *in,uint16* out) __THROW;
-extern void uint16_unpack_big(const char *in,uint16* out) __THROW;
+extern void uint16_pack(char *out,uint16 in);
+extern void uint16_pack_big(char *out,uint16 in);
+extern void uint16_unpack(const char *in,uint16* out);
+extern void uint16_unpack_big(const char *in,uint16* out);
 #else
 
 #include <endian.h>
@@ -18,19 +18,19 @@ extern void uint16_unpack_big(const char *in,uint16* out) __THROW;
 
 #define uint16_pack(out,in) (*(short*)(out)=(in))
 
-extern void uint16_pack_big(char *out,uint16 in) __THROW;
+extern void uint16_pack_big(char *out,uint16 in);
 
 #define uint16_unpack(in,out) (*(out)=*(short*)(in))
 
-extern void uint16_unpack_big(const char *in,uint16* out) __THROW;
+extern void uint16_unpack_big(const char *in,uint16* out);
 
 #else
 
-extern void uint16_pack(char *out,uint16 in) __THROW;
+extern void uint16_pack(char *out,uint16 in);
 
 #define uint16_pack_big(out,in) (*(short*)(out)=(in))
 
-extern void uint16_unpack(const char *in,uint16* out) __THROW;
+extern void uint16_unpack(const char *in,uint16* out);
 
 #define uint16_unpack_big(in,out) (*(out)=*(short*)(in))
 
diff --git a/uint32.h b/uint32.h
index 747f36b..d0073ea 100644
--- a/uint32.h
+++ b/uint32.h
@@ -1,15 +1,13 @@
 #ifndef UINT32_H
 #define UINT32_H
 
-#include <sys/cdefs.h>
-
 typedef unsigned int uint32;
 
 #ifdef NO_UINT32_MACROS
-extern void uint32_pack(char *out,uint32 in) __THROW;
-extern void uint32_pack_big(char *out,uint32 in) __THROW;
-extern void uint32_unpack(const char *in,uint32* out) __THROW;
-extern void uint32_unpack_big(const char *in,uint32* out) __THROW;
+extern void uint32_pack(char *out,uint32 in);
+extern void uint32_pack_big(char *out,uint32 in);
+extern void uint32_unpack(const char *in,uint32* out);
+extern void uint32_unpack_big(const char *in,uint32* out);
 #else
 
 #include <endian.h>
@@ -18,19 +16,19 @@ extern void uint32_unpack_big(const char *in,uint32* out) __THROW;
 
 #define uint32_pack(out,in) (*(uint32*)(out)=(in))
 
-extern void uint32_pack_big(char *out,uint32 in) __THROW;
+extern void uint32_pack_big(char *out,uint32 in);
 
 #define uint32_unpack(in,out) (*(out)=*(uint32*)(in))
 
-extern void uint32_unpack_big(const char *in,uint32* out) __THROW;
+extern void uint32_unpack_big(const char *in,uint32* out);
 
 #else
 
-extern void uint32_pack(char *out,uint32 in) __THROW;
+extern void uint32_pack(char *out,uint32 in);
 
 #define uint32_pack_big(out,in) (*(uint32*)(out)=(in))
 
-extern void uint32_unpack(const char *in,uint32* out) __THROW;
+extern void uint32_unpack(const char *in,uint32* out);
 
 #define uint32_unpack_big(in,out) (*(out)=*(uint32*)(in))
 
diff --git a/uint64.h b/uint64.h
index 59bc45b..792c56c 100644
--- a/uint64.h
+++ b/uint64.h
@@ -1,8 +1,7 @@
 #ifndef UINT64_H
 #define UINT64_H
 
-#include <sys/cdefs.h>
-#include <limits.h>
+#include <endian.h>
 
 #if __WORDSIZE == 64
 typedef unsigned long uint64;