source: rtems/cpukit/libmisc/stringto/stringto_template.h @ d192aa3

4.104.11
Last change on this file since d192aa3 was d192aa3, checked in by Ralf Corsepius <ralf.corsepius@…>, on Mar 28, 2010 at 3:20:04 PM

Reorder includes.

  • Property mode set to 100644
File size: 2.9 KB
Line 
1/*
2 *  COPYRIGHT (c) 2009.
3 *  On-Line Applications Research Corporation (OAR).
4 *
5 *  The license and distribution terms for this file may be
6 *  found in the file LICENSE in this distribution or at
7 *  http://www.rtems.com/license/LICENSE.
8 *
9 *  $Id$
10 */
11
12#include <errno.h>
13#include <stdlib.h>
14#include <limits.h>
15#include <stdbool.h>
16
17#include <rtems/stringto.h>
18
19/*
20 *  If we are doing floating point conversion, then we need math.h
21 */
22#if defined(STRING_TO_FLOAT)
23  #include <math.h>
24#endif
25
26#include <rtems.h>
27
28/*
29 * This file is designed to be included multiple times to instantiate
30 * it and should NOT be protected against multiple inclusions.
31 */
32
33#if defined(STRING_TO_POINTER)
34  #define STRING_TO_INTEGER
35#endif
36
37#if !defined(STRING_TO_FLOAT) && !defined(STRING_TO_INTEGER)
38  #error "Neither STRING_TO_FLOAT nor STRING_TO_INTEGER defined"
39#endif
40
41#if defined(STRING_TO_FLOAT) && defined(STRING_TO_INTEGER)
42  #error "Both STRING_TO_FLOAT nor STRING_TO_INTEGER defined"
43#endif
44
45#ifndef STRING_TO_TYPE
46  #error "STRING_TO_TYPE not defined"
47#endif
48
49#ifndef STRING_TO_NAME
50  #error "STRING_TO_NAME not defined"
51#endif
52
53#ifndef STRING_TO_METHOD
54  #error "STRING_TO_METHOD not defined"
55#endif
56
57#ifndef STRING_TO_MAX
58  #error "STRING_TO_MAX not defined"
59#endif
60
61#undef ZERO
62#ifdef STRING_TO_FLOAT
63  #define ZERO 0.0
64#elif defined(STRING_TO_INTEGER)
65  #define ZERO 0
66#endif
67
68#if !defined(STRING_TO_INPUT_TYPE)
69  #define STRING_TO_INPUT_TYPE STRING_TO_TYPE
70#endif
71
72rtems_status_code STRING_TO_NAME (
73  const char      *s,
74  STRING_TO_TYPE  *n,
75  char           **endptr
76  #if defined(STRING_TO_INTEGER) && !defined(STRING_TO_POINTER)
77    ,
78    int              base
79  #endif
80)
81{
82  STRING_TO_INPUT_TYPE  result;
83  char                 *end;
84
85  if ( !n )
86    return RTEMS_INVALID_ADDRESS;
87
88  errno = 0;
89  *n    = 0;
90
91  #ifdef STRING_TO_FLOAT
92    result = STRING_TO_METHOD( s, &end );
93  #elif defined(STRING_TO_POINTER)
94    result = STRING_TO_METHOD( s, &end, 16 );
95  #elif defined(STRING_TO_INTEGER)
96    result = STRING_TO_METHOD( s, &end, base );
97  #endif
98
99  /* If the user wants the end pointer back, then return it. */
100  if ( endptr )
101    *endptr = end;
102
103  /* nothing was converted */
104  if ( end == s )
105    return RTEMS_NOT_DEFINED;
106
107  /*
108   * In theory, we should check this but newlib never returns anything
109   * but range errors.  So this is unreachable code based upon the newlib
110   * implementation of strXXX methods as of 1 December 2009. --joel
111   */
112  #if 0
113  /* there was a conversion error */
114  if ( (result == ZERO) && errno )
115    return RTEMS_INVALID_NUMBER;
116  #endif
117
118  #ifdef STRING_TO_MAX
119    /* there was an overflow */
120    if ( (result == STRING_TO_MAX) && (errno == ERANGE))
121      return RTEMS_INVALID_NUMBER;
122  #endif
123
124  #ifdef STRING_TO_MIN
125    /* there was an underflow */
126    if ( (result == STRING_TO_MIN) && (errno == ERANGE))
127      return RTEMS_INVALID_NUMBER;
128  #endif
129
130  *n = (STRING_TO_TYPE) result;
131  return RTEMS_SUCCESSFUL;
132}
133
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