Thu Mar 14 06:01:07 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>

	* string/strnlen.c: New file.
	* string/Makefile (routines): Add strnlen.
	* string/string.h [__USE_GNU] (strnlen): Declare new function.
	[__OPTIMIZE__]: Define extern inline implementation of it.

	* stdlib/erand48_r.c: Use __mpn_construct_double instead of ldexp and
	addition, to avoid using anything from -lm.

Mon Mar  4 21:57:14 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/m68k/Makefile: New file.

	* sysdeps/unix/sysv/linux/m68k/sysdep.h (SYS_ify): Redefine.
	(CALL_MCOUNT): New macro, empty unless [PROF].
	(ENTRY): Do CALL_MCOUNT just after the label.
	(JUMPTARGET): New macro.
	(SYSCALL_ERROR_HANDLER): Fix syntax.

Thu Mar 14 04:20:48 1996  Roland McGrath  <roland@charlie-brown.gnu.ai.mit.edu>

	* sysdeps/unix/sysv/linux/init-first.c (init): Call `__personality'
	function instead of using inline asm i386 syscall.
	* sysdeps/unix/sysv/linux/syscalls.list: Add personality syscall.

	* posix/unistd.h [__USE_BSD]: Declare usleep.

	* misc/efgcvt.c (MAXDIG): New macro computed from <floats.h> constants.
	(fcvt, ecvt): Use it for buffer size.

	* stdlib/drand48-iter.c (__drand48_iterate): Use u_int64_t instead of
	conditionalizing long vs long long.

	* stdlib/drand48-iter.c (__drand48_iterate): Don't check for null
	pointers; never return EFAULT.
	* stdlib/drand48_r.c (drand48_r): Likewise.
	* stdlib/erand48_r.c (erand48_r): Likewise.

1 files changed, 19 insertions, 38 deletions

diff --git a/stdlib/drand48-iter.c b/stdlib/drand48-iter.c
index 967c404706..65e78eb3ce 100644
--- a/stdlib/drand48-iter.c
+++ b/stdlib/drand48-iter.c
@@ -20,7 +20,7 @@ Boston, MA 02111-1307, USA.  */
 #include <errno.h>
 #include <stdlib.h>
 #include <limits.h>
-
+#include <sys/types.h>
 
 /* Global state for non-reentrent functions.  */
 struct drand48_data __libc_drand48_data;
@@ -31,12 +31,7 @@ __drand48_iterate (xsubi, buffer)
      unsigned short int xsubi[3];
      struct drand48_data *buffer;
 {
-  /* Be generous for the arguments, detect some errors.  */
-  if (xsubi == NULL || buffer == NULL)
-    {
-      errno = EFAULT;
-      return -1;
-    }
+  u_int64_t X, a, result;
 
   /* Initialize buffer, if not yet done.  */
   if (!buffer->init)
@@ -58,42 +53,28 @@ __drand48_iterate (xsubi, buffer)
      48 bits.  Because we compute the modulus it does not care how
      many bits really are computed.  */
 
-  if (sizeof (long int) >= 6)
+  if (sizeof (unsigned short int) == 2)
     {
-      /* The `long' data type is sufficent.  */
-      unsigned long int X, a, result;
+      X = (xsubi[2] << 16 | xsubi[1]) << 16 | xsubi[0];
+      a = (buffer->a[2] << 16 | buffer->a[1]) << 16 | buffer->a[0];
 
-#define ONE_STEP							    \
-      if (sizeof (unsigned short int) == 2)				    \
-	{								    \
-	  X = (xsubi[2] << 16 | xsubi[1]) << 16 | xsubi[0];		    \
-	  a = (buffer->a[2] << 16 | buffer->a[1]) << 16 | buffer->a[0];	    \
-									    \
-	  result = X * a + buffer->c;					    \
-									    \
-	  xsubi[0] = result & 0xffff;					    \
-	  result >>= 16;						    \
-	  xsubi[1] = result & 0xffff;					    \
-	  result >>= 16;						    \
-	  xsubi[2] = result & 0xffff;					    \
-	}								    \
-      else								    \
-	{								    \
-	  X = xsubi[2] << 16 | xsubi[1] >> 16;				    \
-	  a = buffer->a[2] << 16 | buffer->a[1] >> 16;			    \
-									    \
-	  result = X * a + buffer->c;					    \
-									    \
-	  xsubi[0] = result >> 16 & 0xffffffffl;			    \
-	  xsubi[1] = result << 16 & 0xffff0000l;			    \
-	}
-      ONE_STEP;
+      result = X * a + buffer->c;
+
+      xsubi[0] = result & 0xffff;
+      result >>= 16;
+      xsubi[1] = result & 0xffff;
+      result >>= 16;
+      xsubi[2] = result & 0xffff;
     }
   else
     {
-      /* We have to use the `long long' data type.  */
-      unsigned long long int X, a, result;
-      ONE_STEP;
+      X = xsubi[2] << 16 | xsubi[1] >> 16;
+      a = buffer->a[2] << 16 | buffer->a[1] >> 16;
+
+      result = X * a + buffer->c;
+
+      xsubi[0] = result >> 16 & 0xffffffffl;
+      xsubi[1] = result << 16 & 0xffff0000l;
     }
 
   return 0;