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[libc] Rewrite strtoul()

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The implementation of strtoul() has a partially unknown provenance.
Rewrite this code to avoid potential licensing uncertainty.

Since we now use -ffunction-sections, there is no need to place
strtoull() in a separate file from strtoul().

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2015-02-19 16:00:01 +00:00
parent bb1abb2b21
commit a32b1e9e35
7 changed files with 199 additions and 151 deletions
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48
src/tests/string_test.c
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@@ -31,8 +31,10 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <ipxe/string.h>
#include <ipxe/test.h>
/**
@@ -242,6 +244,52 @@ static void string_test_exec ( void ) {
ok ( dest == buf );
ok ( strcmp ( buf, "append this" ) == 0 );
}
/* Test digit_value() */
{
unsigned int i;
char buf[2];
for ( i = 0 ; i < 16 ; i++ ) {
snprintf ( buf, sizeof ( buf ), "%x", i );
ok ( digit_value ( buf[0] ) == i );
snprintf ( buf, sizeof ( buf ), "%X", i );
ok ( digit_value ( buf[0] ) == i );
}
ok ( digit_value ( 0 ) >= 16 );
ok ( digit_value ( 9 ) >= 16 );
ok ( digit_value ( '0' - 1 ) >= 16 );
ok ( digit_value ( '9' + 1 ) >= 16 );
ok ( digit_value ( 'A' - 1 ) >= 16 );
ok ( digit_value ( 'F' + 1 ) >= 16 );
ok ( digit_value ( 'a' - 1 ) >= 16 );
ok ( digit_value ( 'f' + 1 ) >= 16 );
}
/* Test strtoul() */
ok ( strtoul ( "12345", NULL, 0 ) == 12345UL );
ok ( strtoul ( " 741", NULL, 10 ) == 741UL );
ok ( strtoul ( " 555a", NULL, 0 ) == 555UL );
ok ( strtoul ( " 555a", NULL, 16 ) == 0x555aUL );
ok ( strtoul ( "-12", NULL, 0 ) == -12UL );
ok ( strtoul ( "+3", NULL, 0 ) == 3UL );
ok ( strtoul ( "721", NULL, 0 ) == 721UL );
ok ( strtoul ( "721", NULL, 8 ) == 0721UL );
ok ( strtoul ( "0721", NULL, 0 ) == 0721UL );
ok ( strtoul ( "", NULL, 0 ) == 0UL );
ok ( strtoul ( "\t0xcAfe", NULL, 0 ) == 0xcafeUL );
ok ( strtoul ( "0xffffffff", NULL, 0 ) == 0xffffffffUL );
{
static const char string[] = "123aHa.world";
char *endp;
ok ( strtoul ( string, &endp, 0 ) == 123UL );
ok ( endp == &string[3] );
ok ( strtoul ( string, &endp, 16 ) == 0x123aUL );
ok ( endp == &string[4] );
ok ( strtoul ( string, &endp, 26 ) ==
( ( ( ( ( 1 * 26 + 2 ) * 26 + 3 ) * 26 + 10 ) * 26
+ 17 ) * 26 + 10 ) );
ok ( endp == &string[6] );
}
}
/** String self-test */