96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/* Copyright 2013-2015 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define BUFSZ 50
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#include <stdlib.h>
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#include <assert.h>
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#include <string.h>
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#include <stdio.h>
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int main(void)
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{
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char buf[] = "42, and stuff.";
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char *ptr;
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/* atoi/strtol - general correct behavior */
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assert(atoi("0") == 0);
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assert(atoi("1") == 1);
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assert(atoi(" 123456") == 123456);
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assert(atoi("-72") == -72);
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assert(atoi(" -84") == -84);
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assert(atoi("2147483647") == 2147483647);
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/* atoi/strtol - numbers before and after strings */
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assert(atoi("hello!123") == 0);
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assert(atoi(buf) == 42);
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assert(atoi("42isthemagicnumber") == 42);
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/* atoi is base 10 only */
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assert(atoi("0x800") == 0);
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/* atol - ensure it recognises longs */
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assert(atol("2147483648") == 2147483648);
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assert(atol("-2147483649") == -2147483649);
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/* strtol detects hex */
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assert(strtol("0x800", NULL, 0) == 0x800);
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/* But not with a duplicate prefix */
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assert(strtol("0x0x800", NULL, 0) == 0);
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/* strtol - invalid/weird bases */
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assert(strtol("z", NULL, -1) == 0);
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assert(strtol("11111", NULL, 1) == 0);
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assert(strtol("z", NULL, 37) == 0);
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assert(strtol("z", NULL, 36) == 35);
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assert(strtol("-Y", NULL, 36) == -34);
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/* strtol - ptr advanced correctly */
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ptr = buf;
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assert(strtol(buf, &ptr, 10) == 42);
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assert(ptr == buf + 2);
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/* strtoul - base 10 */
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assert(strtoul("0", NULL, 10) == 0);
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assert(strtoul("1", NULL, 10) == 1);
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assert(strtoul(" 123456", NULL, 10) == 123456);
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assert(strtoul("-72", NULL, 10) == 0);
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assert(strtoul("9999999999", NULL, 10) == 9999999999);
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assert(strtoul("hello!123", NULL, 10) == 0);
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assert(strtoul(buf, NULL, 10) == 42);
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assert(strtoul("42isthemagicnumber", NULL, 10) == 42);
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/* strtoul - autodetection of base */
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assert(strtoul(" 123456", NULL, 0) == 123456);
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assert(strtoul("0x800", NULL, 0) == 0x800);
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assert(strtoul("0x0x800", NULL, 0) == 0);
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/* strtoul - weird/invalid bases */
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assert(strtoul("z", NULL, -1) == 0);
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assert(strtoul("11111", NULL, 1) == 0);
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assert(strtoul("z", NULL, 37) == 0);
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assert(strtoul("z", NULL, 36) == 35);
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assert(strtoul("Y", NULL, 36) == 34);
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/* labs - ensure it returns absolute value */
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assert(labs(0) == 0);
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assert(labs(2147483647) == 2147483647);
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assert(labs(-2147483647) == 2147483647);
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assert(labs(9223372036854775807) == 9223372036854775807);
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assert(labs(-9223372036854775807) == 9223372036854775807);
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return 0;
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}
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