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  1. /*
  2.  * Copyright (c) 1990 The Regents of the University of California.
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms are permitted
  6.  * provided that the above copyright notice and this paragraph are
  7.  * duplicated in all such forms and that any documentation,
  8.  * advertising materials, and other materials related to such
  9.  * distribution and use acknowledge that the software was developed
  10.  * by the University of California, Berkeley.  The name of the
  11.  * University may not be used to endorse or promote products derived
  12.  * from this software without specific prior written permission.
  13.  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  14.  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  15.  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  16.  */
  17.  
  18. /*
  19. FUNCTION
  20. <<fputc>>---write a character on a stream or file
  21.  
  22. INDEX
  23.         fputc
  24. INDEX
  25.         _fputc_r
  26.  
  27. ANSI_SYNOPSIS
  28.         #include <stdio.h>
  29.         int fputc(int <[ch]>, FILE *<[fp]>);
  30.  
  31.         #include <stdio.h>
  32.         int _fputc_r(struct _rent *<[ptr]>, int <[ch]>, FILE *<[fp]>);
  33.  
  34. TRAD_SYNOPSIS
  35.         #include <stdio.h>
  36.         int fputc(<[ch]>, <[fp]>)
  37.         int <[ch]>;
  38.         FILE *<[fp]>;
  39.  
  40.         #include <stdio.h>
  41.         int _fputc_r(<[ptr]>, <[ch]>, <[fp]>)
  42.         struct _reent *<[ptr]>;
  43.         int <[ch]>;
  44.         FILE *<[fp]>;
  45.  
  46. DESCRIPTION
  47. <<fputc>> converts the argument <[ch]> from an <<int>> to an
  48. <<unsigned char>>, then writes it to the file or stream identified by
  49. <[fp]>.
  50.  
  51. If the file was opened with append mode (or if the stream cannot
  52. support positioning), then the new character goes at the end of the
  53. file or stream.  Otherwise, the new character is written at the
  54. current value of the position indicator, and the position indicator
  55. oadvances by one.
  56.  
  57. For a macro version of this function, see <<putc>>.
  58.  
  59. The <<_fputc_r>> function is simply a reentrant version of <<fputc>>
  60. that takes an additional reentrant structure argument: <[ptr]>.
  61.  
  62. RETURNS
  63. If successful, <<fputc>> returns its argument <[ch]>.  If an error
  64. intervenes, the result is <<EOF>>.  You can use `<<ferror(<[fp]>)>>' to
  65. query for errors.
  66.  
  67. PORTABILITY
  68. <<fputc>> is required by ANSI C.
  69.  
  70. Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
  71. <<lseek>>, <<read>>, <<sbrk>>, <<write>>.
  72. */
  73.  
  74. #include <_ansi.h>
  75. #include <stdio.h>
  76. #include "local.h"
  77.  
  78. int
  79. _DEFUN(_fputc_r, (ptr, ch, file),
  80.        struct _reent *ptr _AND
  81.        int ch _AND
  82.        FILE * file)
  83. {
  84.   int result;
  85.   CHECK_INIT(ptr, file);
  86.    _newlib_flockfile_start (file);
  87.   result = _putc_r (ptr, ch, file);
  88.   _newlib_flockfile_end (file);
  89.   return result;
  90. }
  91.  
  92. #ifndef _REENT_ONLY
  93. int
  94. _DEFUN(fputc, (ch, file),
  95.        int ch _AND
  96.        FILE * file)
  97. {
  98. #if !defined(__OPTIMIZE_SIZE__) && !defined(PREFER_SIZE_OVER_SPEED)
  99.   int result;
  100.   struct _reent *reent = _REENT;
  101.  
  102.   CHECK_INIT(reent, file);
  103.    _newlib_flockfile_start (file);
  104.   result = _putc_r (reent, ch, file);
  105.   _newlib_flockfile_end (file);
  106.   return result;
  107. #else
  108.   return _fputc_r (_REENT, ch, file);
  109. #endif
  110. }
  111. #endif /* !_REENT_ONLY */
  112.