From 8a0efa53e44919bcf5ccb1d3353618a82afdf8bc Mon Sep 17 00:00:00 2001
From: Christopher Faylor <me@cgf.cx>
Date: Thu, 17 Feb 2000 19:39:52 +0000
Subject: import newlib-2000-02-17 snapshot

---
 newlib/libc/stdio/fwrite.c | 104 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 newlib/libc/stdio/fwrite.c

(limited to 'newlib/libc/stdio/fwrite.c')

diff --git a/newlib/libc/stdio/fwrite.c b/newlib/libc/stdio/fwrite.c
new file mode 100644
index 000000000..642fb274f
--- /dev/null
+++ b/newlib/libc/stdio/fwrite.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*
+FUNCTION
+<<fwrite>>---write array elements
+
+INDEX
+	fwrite
+
+ANSI_SYNOPSIS
+	#include <stdio.h>
+	size_t fwrite(const void *<[buf]>, size_t <[size]>,
+		      size_t <[count]>, FILE *<[fp]>);
+
+TRAD_SYNOPSIS
+	#include <stdio.h>
+	size_t fwrite(<[buf]>, <[size]>, <[count]>, <[fp]>)
+	char *<[buf]>;
+	size_t <[size]>;
+	size_t <[count]>;
+	FILE *<[fp]>;
+
+DESCRIPTION
+<<fwrite>> attempts to copy, starting from the memory location
+<[buf]>, <[count]> elements (each of size <[size]>) into the file or
+stream identified by <[fp]>.  <<fwrite>> may copy fewer elements than
+<[count]> if an error intervenes.
+
+<<fwrite>> also advances the file position indicator (if any) for
+<[fp]> by the number of @emph{characters} actually written.
+
+RETURNS
+If <<fwrite>> succeeds in writing all the elements you specify, the
+result is the same as the argument <[count]>.  In any event, the
+result is the number of complete elements that <<fwrite>> copied to
+the file.
+
+PORTABILITY
+ANSI C requires <<fwrite>>.
+
+Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
+<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
+*/
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "%W% (Berkeley) %G%";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <string.h>
+#if 0
+#include <sys/stdc.h>
+#endif
+#include "local.h"
+#if 1
+#include "fvwrite.h"
+#endif
+
+/*
+ * Write `count' objects (each size `size') from memory to the given file.
+ * Return the number of whole objects written.
+ */
+
+size_t
+_DEFUN (fwrite, (buf, size, count, fp),
+	_CONST _PTR buf _AND
+	size_t size _AND
+	size_t count _AND
+	FILE * fp)
+{
+  size_t n;
+  struct __suio uio;
+  struct __siov iov;
+
+  iov.iov_base = buf;
+  uio.uio_resid = iov.iov_len = n = count * size;
+  uio.uio_iov = &iov;
+  uio.uio_iovcnt = 1;
+
+  /*
+   * The usual case is success (__sfvwrite returns 0);
+   * skip the divide if this happens, since divides are
+   * generally slow and since this occurs whenever size==0.
+   */
+
+  if (__sfvwrite (fp, &uio) == 0)
+    return count;
+  return (n - uio.uio_resid) / size;
+}
-- 
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