mirror of https://github.com/gnss-sdr/gnss-sdr
32 lines
734 B
C
32 lines
734 B
C
// SPDX-FileCopyrightText: 2017 Google Inc.
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// SPDX-License-Identifier: Apache-2.0
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#ifndef CPU_FEATURES_INCLUDE_INTERNAL_BIT_UTILS_H_
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#define CPU_FEATURES_INCLUDE_INTERNAL_BIT_UTILS_H_
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#include "cpu_features_macros.h"
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#include <assert.h>
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#include <stdbool.h>
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#include <stdint.h>
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CPU_FEATURES_START_CPP_NAMESPACE
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inline static bool IsBitSet(uint32_t reg, uint32_t bit)
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{
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return (reg >> bit) & 0x1;
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}
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inline static uint32_t ExtractBitRange(uint32_t reg, uint32_t msb,
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uint32_t lsb)
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{
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const uint64_t bits = msb - lsb + 1ULL;
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const uint64_t mask = (1ULL << bits) - 1ULL;
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assert(msb >= lsb);
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return (reg >> lsb) & mask;
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}
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CPU_FEATURES_END_CPP_NAMESPACE
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#endif // CPU_FEATURES_INCLUDE_INTERNAL_BIT_UTILS_H_
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