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      1 /*	$NetBSD: sane_strtol.c,v 1.3 2025/02/25 19:15:52 christos Exp $	*/
      2 
      3 /*++
      4 /* NAME
      5 /*	sane_strtol 3
      6 /* SUMMARY
      7 /*	strtol() with mandatory errno reset
      8 /* SYNOPSIS
      9 /*	#include <sane_strtol.h>
     10 /*
     11 /*	long	sane_strtol(
     12 /*	const char *start,
     13 /*	char **restrict end,
     14 /*	int	base)
     15 /*
     16 /*	unsigned long sane_strtoul(
     17 /*	const char *start,
     18 /*	char **restrict end,
     19 /*	int	base)
     20 /* DESCRIPTION
     21 /*	These functions are wrappers around the strtol() and strtoul()
     22 /*	standard library functions that reset errno first, so that a
     23 /*	prior ERANGE error won't cause false errors.
     24 /* LICENSE
     25 /* .ad
     26 /* .fi
     27 /*	The Secure Mailer license must be distributed with this software.
     28 /* AUTHOR(S)
     29 /*	Wietse Venema
     30 /*	Google, Inc.
     31 /*	111 8th Avenue
     32 /*	New York, NY 10011, USA
     33 /*--*/
     34 
     35  /*
     36   * System library.
     37   */
     38 #include <sys_defs.h>
     39 #include <stdlib.h>
     40 #include <errno.h>
     41 
     42  /*
     43   * Utility library.
     44   */
     45 #include <sane_strtol.h>
     46 
     47 /* sane_strtol - strtol() with mandatory initialization */
     48 
     49 long    sane_strtol(const char *start, char **end, int base)
     50 {
     51     errno = 0;
     52     return (strtol(start, end, base));
     53 }
     54 
     55 /* sane_strtoul - strtoul() with mandatory initialization */
     56 
     57 unsigned long sane_strtoul(const char *start, char **end, int base)
     58 {
     59     errno = 0;
     60     return (strtoul(start, end, base));
     61 }
     62