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36 lines
1.3 KiB
C
Executable File
36 lines
1.3 KiB
C
Executable File
/*
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* Copyright 2010-2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License").
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* You may not use this file except in compliance with the License.
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* A copy of the License is located at
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*
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* http://aws.amazon.com/apache2.0
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*
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* or in the "license" file accompanying this file. This file is distributed
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* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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#include <aws/checksums/crc.h>
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#include <aws/checksums/private/cpuid.h>
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#include <aws/checksums/private/crc_priv.h>
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static uint32_t (*s_crc32c_fn_ptr)(const uint8_t *input, int length, uint32_t previousCrc32) = 0;
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uint32_t aws_checksums_crc32(const uint8_t *input, int length, uint32_t previousCrc32) {
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return aws_checksums_crc32_sw(input, length, previousCrc32);
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}
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uint32_t aws_checksums_crc32c(const uint8_t *input, int length, uint32_t previousCrc32) {
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if (!s_crc32c_fn_ptr) {
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if (aws_checksums_is_sse42_present()) {
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s_crc32c_fn_ptr = aws_checksums_crc32c_hw;
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} else {
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s_crc32c_fn_ptr = aws_checksums_crc32c_sw;
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}
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}
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return s_crc32c_fn_ptr(input, length, previousCrc32);
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}
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