47 lines
1.1 KiB
Plaintext
47 lines
1.1 KiB
Plaintext
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# Copyright (c) 2022 Meta
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#
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# SPDX-License-Identifier: Apache-2.0
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menu "Hash Function Support"
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config SYS_HASH_FUNC32
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bool "Hash function support"
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help
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Enable this option to support hash functions.
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if SYS_HASH_FUNC32
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config SYS_HASH_FUNC32_DJB2
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bool "Daniel J. Bernstein's hash function (djb2)"
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config SYS_HASH_FUNC32_MURMUR3
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bool "Murmur3 hash function"
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choice SYS_HASH_FUNC32_CHOICE
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prompt "Default system-wide 32-bit hash function"
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default SYS_HASH_FUNC32_CHOICE_MURMUR3
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help
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The default system-wide 32-bit hash function is sys_hash32().
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config SYS_HASH_FUNC32_CHOICE_DJB2
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bool "Default 32-bit hash is djb2"
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select SYS_HASH_FUNC32_DJB2
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config SYS_HASH_FUNC32_CHOICE_MURMUR3
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bool "Default 32-bit hash is Murmur3"
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select SYS_HASH_FUNC32_MURMUR3
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config SYS_HASH_FUNC32_CHOICE_IDENTITY
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bool "Default 32-bit hash is the identity"
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help
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This is the naive identity hash function. It only works for strings
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either 1, 2, 4, or 8 bytes in length and so is suitable for scalar
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values such as keys in a Hashmap. It is implemented as a static
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inline function.
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endchoice # SYS_HASH_FUNC_CHOICE
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endif # SYS_HASH_FUNC
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endmenu
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