1 /* 2 FUNCTION 3 <<strtoull>>---string to unsigned long long 4 5 INDEX 6 strtoull 7 INDEX 8 _strtoull_r 9 10 ANSI_SYNOPSIS 11 #include <stdlib.h> 12 unsigned long long strtoull(const char *restrict <[s]>, char **restrict <[ptr]>, 13 int <[base]>); 14 15 unsigned long long _strtoull_r(void *<[reent]>, const char *restrict <[s]>, 16 char **restrict <[ptr]>, int <[base]>); 17 18 TRAD_SYNOPSIS 19 #include <stdlib.h> 20 unsigned long long strtoull(<[s]>, <[ptr]>, <[base]>) 21 char *<[s]>; 22 char **<[ptr]>; 23 int <[base]>; 24 25 unsigned long long _strtoull_r(<[reent]>, <[s]>, <[ptr]>, <[base]>) 26 char *<[reent]>; 27 char *<[s]>; 28 char **<[ptr]>; 29 int <[base]>; 30 31 DESCRIPTION 32 The function <<strtoull>> converts the string <<*<[s]>>> to 33 an <<unsigned long long>>. First, it breaks down the string into three parts: 34 leading whitespace, which is ignored; a subject string consisting 35 of the digits meaningful in the radix specified by <[base]> 36 (for example, <<0>> through <<7>> if the value of <[base]> is 8); 37 and a trailing portion consisting of one or more unparseable characters, 38 which always includes the terminating null character. Then, it attempts 39 to convert the subject string into an unsigned long long integer, and returns the 40 result. 41 42 If the value of <[base]> is zero, the subject string is expected to look 43 like a normal C integer constant (save that no optional sign is permitted): 44 a possible <<0x>> indicating hexadecimal radix, and a number. 45 If <[base]> is between 2 and 36, the expected form of the subject is a 46 sequence of digits (which may include letters, depending on the 47 base) representing an integer in the radix specified by <[base]>. 48 The letters <<a>>--<<z>> (or <<A>>--<<Z>>) are used as digits valued from 49 10 to 35. If <[base]> is 16, a leading <<0x>> is permitted. 50 51 The subject sequence is the longest initial sequence of the input 52 string that has the expected form, starting with the first 53 non-whitespace character. If the string is empty or consists entirely 54 of whitespace, or if the first non-whitespace character is not a 55 permissible digit, the subject string is empty. 56 57 If the subject string is acceptable, and the value of <[base]> is zero, 58 <<strtoull>> attempts to determine the radix from the input string. A 59 string with a leading <<0x>> is treated as a hexadecimal value; a string with 60 a leading <<0>> and no <<x>> is treated as octal; all other strings are 61 treated as decimal. If <[base]> is between 2 and 36, it is used as the 62 conversion radix, as described above. Finally, a pointer to the first 63 character past the converted subject string is stored in <[ptr]>, if 64 <[ptr]> is not <<NULL>>. 65 66 If the subject string is empty (that is, if <<*>><[s]> does not start 67 with a substring in acceptable form), no conversion 68 is performed and the value of <[s]> is stored in <[ptr]> (if <[ptr]> is 69 not <<NULL>>). 70 71 The alternate function <<_strtoull_r>> is a reentrant version. The 72 extra argument <[reent]> is a pointer to a reentrancy structure. 73 74 75 RETURNS 76 <<strtoull>> returns the converted value, if any. If no conversion was 77 made, <<0>> is returned. 78 79 <<strtoull>> returns <<ULONG_LONG_MAX>> if the magnitude of the converted 80 value is too large, and sets <<errno>> to <<ERANGE>>. 81 82 PORTABILITY 83 <<strtoull>> is ANSI. 84 85 <<strtoull>> requires no supporting OS subroutines. 86 */ 87 88 /* 89 * Copyright (c) 1990 Regents of the University of California. 90 * All rights reserved. 91 * 92 * Redistribution and use in source and binary forms, with or without 93 * modification, are permitted provided that the following conditions 94 * are met: 95 * 1. Redistributions of source code must retain the above copyright 96 * notice, this list of conditions and the following disclaimer. 97 * 2. Redistributions in binary form must reproduce the above copyright 98 * notice, this list of conditions and the following disclaimer in the 99 * documentation and/or other materials provided with the distribution. 100 * 3. All advertising materials mentioning features or use of this software 101 * must display the following acknowledgement: 102 * This product includes software developed by the University of 103 * California, Berkeley and its contributors. 104 * 4. Neither the name of the University nor the names of its contributors 105 * may be used to endorse or promote products derived from this software 106 * without specific prior written permission. 107 * 108 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 109 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 110 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 111 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 112 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 113 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 114 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 115 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 116 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 117 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 118 * SUCH DAMAGE. 119 */ 120 121 #include <_ansi.h> 122 #include <limits.h> 123 #include <ctype.h> 124 #include <errno.h> 125 #include <stdlib.h> 126 #include <reent.h> 127 128 #ifndef _REENT_ONLY 129 130 unsigned long long 131 _DEFUN (strtoull, (s, ptr, base), 132 _CONST char *__restrict s _AND 133 char **__restrict ptr _AND 134 int base) 135 { 136 return _strtoull_r (_REENT, s, ptr, base); 137 } 138 139 #endif 140