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[libc] Fix strcmp()/strncmp() to return proper values
Fix strcmp() and strncmp() to return proper standard positive/negative values for unequal strings. Current implementation is backwards (i.e. the functions are returning negative when should be positive and vice-versa). Currently all consumers of these functions only check the return value for ==0 or !=0 and so we can safely change the implementation without breaking things. Signed-off-by: Aaron Young <Aaron.Young@oracle.com> Modified-by: Michael Brown <mcb30@ipxe.org> Signed-off-by: Michael Brown <mcb30@ipxe.org>
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