external/bsd/blacklist/port/_strtoi.h

   1 /*      $NetBSD: _strtoi.h,v 1.1 2015/01/22 02:15:59 christos Exp $     */
   2
   3 /*-
   4  * Copyright (c) 1990, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  * Original version ID:
  32  * NetBSD: src/lib/libc/locale/_wcstoul.h,v 1.2 2003/08/07 16:43:03 agc Exp
  33  *
  34  * Created by Kamil Rytarowski, based on ID:
  35  * NetBSD: src/common/lib/libc/stdlib/_strtoul.h,v 1.7 2013/05/17 12:55:56 joerg Exp
  36  */
  37
  38 /*
  39  * function template for strtoi and strtou
  40  *
  41  * parameters:
  42  *      _FUNCNAME    : function name
  43  *      __TYPE       : return and range limits type
  44  *      __WRAPPED    : wrapped function, strtoimax or strtoumax
  45  */
  46
  47 __TYPE
  48 _FUNCNAME(const char * __restrict nptr, char ** __restrict endptr, int base,
  49           __TYPE lo, __TYPE hi, int * rstatus)
  50 {
  51         int serrno;
  52         __TYPE im;
  53         char *ep;
  54         int rep;
  55
  56         /* endptr may be NULL */
  57
  58         if (endptr == NULL)
  59                 endptr = &ep;
  60
  61         if (rstatus == NULL)
  62                 rstatus = &rep;
  63
  64         serrno = errno;
  65         errno = 0;
  66
  67         im = __WRAPPED(nptr, endptr, base);
  68
  69         *rstatus = errno;
  70         errno = serrno;
  71
  72         if (*rstatus == 0) {
  73                 /* No digits were found */
  74                 if (nptr == *endptr)
  75                         *rstatus = ECANCELED;
  76                 /* There are further characters after number */
  77                 else if (**endptr != '\0')
  78                         *rstatus = ENOTSUP;
  79         }
  80
  81         if (im < lo) {
  82                 if (*rstatus == 0)
  83                         *rstatus = ERANGE;
  84                 return lo;
  85         }
  86         if (im > hi) {
  87                 if (*rstatus == 0)
  88                         *rstatus = ERANGE;
  89                 return hi;
  90         }
  91
  92         return im;
  93 }