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Add really cheap atol() since sizeof(int) == sizeof(long) here anyway.

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This commit is contained in:
Andreas Kling 2018-11-11 10:40:50 +01:00
parent f394e3486a
commit 9b70808ab5
2 changed files with 8 additions and 1 deletions
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8
LibC/stdlib.cpp
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@ -103,11 +103,17 @@ int atoi(const char* str)
continue; continue;
} }
if (str[i] < '0' || str[i] > '9') if (str[i] < '0' || str[i] > '9')
return 0; return value;
value = value * 10; value = value * 10;
value += str[i] - '0'; value += str[i] - '0';
} }
return isNegative ? -value : value; return isNegative ? -value : value;
} }
long atol(const char* str)
{
static_assert(sizeof(int) == sizeof(long));
return atoi(str);
}
} }

1
LibC/stdlib.h
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@ -11,6 +11,7 @@ void* calloc(size_t nmemb, size_t);
void* realloc(void *ptr, size_t); void* realloc(void *ptr, size_t);
char* getenv(const char* name); char* getenv(const char* name);
int atoi(const char*); int atoi(const char*);
long atol(const char*);
void exit(int status) __NORETURN; void exit(int status) __NORETURN;
void abort() __NORETURN; void abort() __NORETURN;