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| author | Michael Brown | 2012-04-17 11:15:29 +0200 |
|---|---|---|
| committer | Michael Brown | 2012-04-17 11:42:08 +0200 |
| commit | 1d33649516f2046e9fe692d42fffeeec96a2b858 (patch) | |
| tree | f48462239a4cd88f506b8613cb0c05d885735fcf /src/core/strtoull.c | |
| parent | [multiboot] Include full image URI in command line (diff) | |
| download | ipxe-1d33649516f2046e9fe692d42fffeeec96a2b858.tar.gz ipxe-1d33649516f2046e9fe692d42fffeeec96a2b858.tar.xz ipxe-1d33649516f2046e9fe692d42fffeeec96a2b858.zip | |
[libc] Allow strtoul() to interpret negative numbers
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/core/strtoull.c')
| -rw-r--r-- | src/core/strtoull.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/core/strtoull.c b/src/core/strtoull.c index b1ceeb45..00986eef 100644 --- a/src/core/strtoull.c +++ b/src/core/strtoull.c @@ -29,8 +29,17 @@ FILE_LICENCE ( GPL2_OR_LATER ); */ unsigned long long strtoull ( const char *p, char **endp, int base ) { unsigned long long ret = 0; + int negative = 0; unsigned int charval; + while ( isspace ( *p ) ) + p++; + + if ( *p == '-' ) { + negative = 1; + p++; + } + base = strtoul_base ( &p, base ); while ( 1 ) { @@ -41,6 +50,9 @@ unsigned long long strtoull ( const char *p, char **endp, int base ) { p++; } + if ( negative ) + ret = -ret; + if ( endp ) *endp = ( char * ) p; |