| /* SPDX-License-Identifier: MIT */ |
| |
| /* |
| * Copyright © 2005-2014 Rich Felker, et al. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sublicense, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| /* From: http://fossies.org/dox/musl-1.0.5/atoi_8c_source.html */ |
| |
| #include <stdlib.h> |
| #include <ctype.h> |
| |
| int atoi(const char *s) |
| { |
| int n = 0; |
| int neg = 0; |
| |
| while (isspace((unsigned char)*s)) { |
| s++; |
| } |
| switch (*s) { |
| case '-': |
| neg = 1; |
| s++; |
| break; /* artifact to quiet coverity warning */ |
| case '+': |
| s++; |
| default: |
| /* Add an empty default with break, this is a defensive programming. |
| * Static analysis tool won't raise a violation if default is empty, |
| * but has that comment. |
| */ |
| break; |
| } |
| /* Compute n as a negative number to avoid overflow on INT_MIN */ |
| while (isdigit((unsigned char)*s)) { |
| n = 10*n - (*s++ - '0'); |
| } |
| return neg ? n : -n; |
| } |