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-rw-r--r--absl/strings/internal/bits.h53
1 files changed, 0 insertions, 53 deletions
diff --git a/absl/strings/internal/bits.h b/absl/strings/internal/bits.h
deleted file mode 100644
index 901082cc..00000000
--- a/absl/strings/internal/bits.h
+++ /dev/null
@@ -1,53 +0,0 @@
-// Copyright 2018 The Abseil Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#ifndef ABSL_STRINGS_INTERNAL_BITS_H_
-#define ABSL_STRINGS_INTERNAL_BITS_H_
-
-#include <cstdint>
-
-#if defined(_MSC_VER) && defined(_M_X64)
-#include <intrin.h>
-#pragma intrinsic(_BitScanReverse64)
-#endif
-
-namespace absl {
-namespace strings_internal {
-
-// Returns the number of leading 0 bits in a 64-bit value.
-inline int CountLeadingZeros64(uint64_t n) {
-#if defined(__GNUC__)
- static_assert(sizeof(unsigned long long) == sizeof(n), // NOLINT(runtime/int)
- "__builtin_clzll does not take 64bit arg");
- return n == 0 ? 64 : __builtin_clzll(n);
-#elif defined(_MSC_VER) && defined(_M_X64)
- unsigned long result; // NOLINT(runtime/int)
- if (_BitScanReverse64(&result, n)) {
- return 63 - result;
- }
- return 64;
-#else
- int zeroes = 60;
- if (n >> 32) zeroes -= 32, n >>= 32;
- if (n >> 16) zeroes -= 16, n >>= 16;
- if (n >> 8) zeroes -= 8, n >>= 8;
- if (n >> 4) zeroes -= 4, n >>= 4;
- return "\4\3\2\2\1\1\1\1\0\0\0\0\0\0\0\0"[n] + zeroes;
-#endif
-}
-
-} // namespace strings_internal
-} // namespace absl
-
-#endif // ABSL_STRINGS_INTERNAL_BITS_H_