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https://github.com/soypat/lneto.git
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Pat Whittingslow
66a1aec593
* begin adding better fuzz test * finish adding working fuzzer * implement mutateipv4 * fuzzer finds a panic in ICMP client on receive empty payload * rename fuzz tests to reflect fuzz methodology
28 lines
649 B
Go
28 lines
649 B
Go
package internal
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// Prand16 generates a pseudo random number from a seed.
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func Prand16(seed uint16) uint16 {
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// 16bit Xorshift https://en.wikipedia.org/wiki/Xorshift
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seed ^= seed << 7
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seed ^= seed >> 9
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seed ^= seed << 8
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return seed
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}
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// Prand32 generates a pseudo random number from a seed.
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func Prand32[T ~uint32](seed T) T {
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/* Algorithm "xor" from p. 4 of Marsaglia, "Xorshift RNGs" */
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seed ^= seed << 13
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seed ^= seed >> 17
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seed ^= seed << 5
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return seed
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}
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// Prand32 generates a pseudo random number from a seed.
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func Prand64[T ~uint64 | ~int64](seed T) T {
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seed ^= seed << 13
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seed ^= seed >> 7
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seed ^= seed << 17
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return seed
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}
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