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//===-- Implementation of strspn ------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/string/strspn.h"
#include "src/__support/common.h"
#include "utils/CPP/Bitset.h"
#include <stddef.h>
namespace __llvm_libc {
size_t LLVM_LIBC_ENTRYPOINT(strspn)(const char *src, const char *segment) {
const char *initial = src;
cpp::Bitset<256> bitset;
for (; *segment; ++segment)
bitset.set(*segment);
for (; *src && bitset.test(*src); ++src)
;
return src - initial;
}
} // namespace __llvm_libc
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