/* $Id$ */
-/* Release $Name$ */
-
/* strtoull( const char *, char * *, int )
This file is part of the Public Domain C Library (PDCLib).
Permission is granted to use, modify, and / or redistribute at will.
*/
-#include <_PDCLIB_int.h>
#include <limits.h>
-#include <stddef.h>
#include <stdlib.h>
#ifndef REGTEST
+#include <stdint.h>
+
unsigned long long int strtoull( const char * s, char ** endptr, int base )
{
unsigned long long int rc;
char sign = '+';
const char * p = _PDCLIB_strtox_prelim( s, &sign, &base );
- rc = _PDCLIB_strtox_main( &p, base, ULLONG_MAX, ULLONG_MAX / base, ULLONG_MAX % base, &sign );
+ if ( base < 2 || base > 36 ) return 0;
+ rc = _PDCLIB_strtox_main( &p, (unsigned)base, (uintmax_t)ULLONG_MAX, (uintmax_t)( ULLONG_MAX / base ), (int)( ULLONG_MAX % base ), &sign );
if ( endptr != NULL ) *endptr = ( p != NULL ) ? (char *) p : (char *) s;
return ( sign == '+' ) ? rc : -rc;
}
#include <_PDCLIB_test.h>
#include <errno.h>
-int main()
+int main( void )
{
char * endptr;
/* this, to base 36, overflows even a 256 bit integer */
char overflow[] = "-ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ_";
- BEGIN_TESTS;
+ /* tricky border case */
+ char tricky[] = "+0xz";
errno = 0;
/* basic functionality */
TESTCASE( strtoull( "123", NULL, 10 ) == 123 );
/* proper detecting of default base 10 */
- TESTCASE( strtoull( "123", NULL, 0 ) == 123 );
+ TESTCASE( strtoull( "456", NULL, 0 ) == 456 );
/* proper functioning to smaller base */
TESTCASE( strtoull( "14", NULL, 8 ) == 12 );
/* proper autodetecting of octal */
- TESTCASE( strtoull( "014", NULL, 0 ) == 12 );
+ TESTCASE( strtoull( "016", NULL, 0 ) == 14 );
/* proper autodetecting of hexadecimal, lowercase 'x' */
TESTCASE( strtoull( "0xFF", NULL, 0 ) == 255 );
/* proper autodetecting of hexadecimal, uppercase 'X' */
- TESTCASE( strtoull( "0XFF", NULL, 0 ) == 255 );
+ TESTCASE( strtoull( "0Xa1", NULL, 0 ) == 161 );
+ /* proper handling of border case: 0x followed by non-hexdigit */
+ TESTCASE( strtoull( tricky, &endptr, 0 ) == 0 );
+ TESTCASE( endptr == tricky + 2 );
+ /* proper handling of border case: 0 followed by non-octdigit */
+ TESTCASE( strtoull( tricky, &endptr, 8 ) == 0 );
+ TESTCASE( endptr == tricky + 2 );
/* errno should still be 0 */
TESTCASE( errno == 0 );
/* overflowing subject sequence must still return proper endptr */
TESTCASE( errno == ERANGE );
TESTCASE( ( endptr - overflow ) == 53 );
/* testing skipping of leading whitespace */
- TESTCASE( strtoull( " \n\v\t\f123", NULL, 0 ) == 123 );
+ TESTCASE( strtoull( " \n\v\t\f789", NULL, 0 ) == 789 );
/* testing conversion failure */
TESTCASE( strtoull( overflow, &endptr, 10 ) == 0 );
TESTCASE( endptr == overflow );
endptr = NULL;
TESTCASE( strtoull( overflow, &endptr, 0 ) == 0 );
TESTCASE( endptr == overflow );
+ errno = 0;
+/* long long -> 64 bit */
+#if ULLONG_MAX >> 63 == 1
+ /* testing "even" overflow, i.e. base is power of two */
+ TESTCASE( strtoull( "18446744073709551615", NULL, 0 ) == ULLONG_MAX );
+ TESTCASE( errno == 0 );
+ TESTCASE( strtoull( "18446744073709551616", NULL, 0 ) == ULLONG_MAX );
+ TESTCASE( errno == ERANGE );
+ /* TODO: test "odd" overflow, i.e. base is not power of two */
+/* long long -> 128 bit */
+#elif ULLONG_MAX >> 127 == 1
+ /* testing "even" overflow, i.e. base is power of two */
+ TESTCASE( strtoull( "340282366920938463463374607431768211455", NULL, 0 ) == ULLONG_MAX );
+ TESTCASE( errno == 0 );
+ TESTCASE( strtoull( "340282366920938463463374607431768211456", NULL, 0 ) == ULLONG_MAX );
+ TESTCASE( errno == ERANGE );
+ /* TODO: test "odd" overflow, i.e. base is not power of two */
+#else
+#error Unsupported width of 'long long' (neither 64 nor 128 bit).
+#endif
return TEST_RESULTS;
}
+
#endif