uint128.h File Reference

Common functions for manipulating unsigned 128bit integers on platforms without compiler support. More...

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Functions
static uint128_t	uint128_add (uint128_t a, uint128_t b)
	Add two 128bit unsigned integers.
static uint128_t	uint128_band (uint128_t a, uint128_t b)
	Perform bitwise & of two 128bit unsigned integers.
static uint128_t	uint128_bor (uint128_t a, uint128_t b)
	Perform bitwise | of two 128bit unsigned integers.
static uint128_t	uint128_decrement (uint128_t n)
	Decrement a 128bit unsigned integer.
static bool	uint128_eq (uint128_t a, uint128_t b)
	Return whether the integers are equal.
static uint128_t	uint128_gen_mask (uint8_t bits)
	Create a 128 bit integer value with n bits high.
static bool	uint128_gt (uint128_t a, uint128_t b)
	Return whether one integer is greater than the other.
static uint128_t	uint128_increment (uint128_t n)
	Increment a 128bit unsigned integer.
static uint128_t	uint128_lshift (uint128_t num, uint8_t bits)
	Left shift 128 bit integer.
static uint128_t	uint128_mul (uint128_t n, uint128_t m)
	Multiply two unsigned 128bit integers.
static uint128_t	uint128_mul64 (uint64_t u, uint64_t v)
	Multiply two unsigned 64bit integers to get an unsigned 128bit integer.
static uint128_t	uint128_new (uint64_t h, uint64_t l)
	Creates a new uint128_t from a uint64_t.
static uint128_t	uint128_rshift (uint128_t num, uint8_t bits)
	Right shift 128 bit integer.
static uint128_t	uint128_sub (uint128_t a, uint128_t b)
	Subtract one 128bit integer from another.
static uint64_t	uint128_to_64 (uint128_t a)
	Returns the low bits of a 128bit integer.

Detailed Description

Common functions for manipulating unsigned 128bit integers on platforms without compiler support.

Id

6acf0f34a2c358e843c2e98f610676cc24d36337

Author

Jacob F. W

Arran Cudbard-Bell

Copyright

2019 Arran Cudbard-Bell (a.cud.nosp@m.bard.nosp@m.b@fre.nosp@m.erad.nosp@m.ius.o.nosp@m.rg)

2019 The FreeRADIUS server project

Definition in file uint128.h.

Function Documentation

uint128_add()

static uint128_t uint128_add ( uint128_t  a, uint128_t  b  )

inlinestatic

Add two 128bit unsigned integers.

Author

Jacob F. W

Definition at line 115 of file uint128.h.

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uint128_band()

static uint128_t uint128_band ( uint128_t  a, uint128_t  b  )

inlinestatic

Perform bitwise & of two 128bit unsigned integers.

Definition at line 228 of file uint128.h.

uint128_bor()

static uint128_t uint128_bor ( uint128_t  a, uint128_t  b  )

inlinestatic

Perform bitwise | of two 128bit unsigned integers.

Definition at line 239 of file uint128.h.

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uint128_decrement()

static uint128_t uint128_decrement ( uint128_t  n )

inlinestatic

Decrement a 128bit unsigned integer.

Author

Jacob F. W

Definition at line 102 of file uint128.h.

uint128_eq()

static bool uint128_eq ( uint128_t  a, uint128_t  b  )

inlinestatic

Return whether the integers are equal.

Definition at line 250 of file uint128.h.

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uint128_gen_mask()

static uint128_t uint128_gen_mask ( uint8_t  bits )

inlinestatic

Create a 128 bit integer value with n bits high.

Definition at line 65 of file uint128.h.

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uint128_gt()

static bool uint128_gt ( uint128_t  a, uint128_t  b  )

inlinestatic

Return whether one integer is greater than the other.

Definition at line 258 of file uint128.h.

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uint128_increment()

static uint128_t uint128_increment ( uint128_t  n )

inlinestatic

Increment a 128bit unsigned integer.

Author

Jacob F. W

Definition at line 88 of file uint128.h.

uint128_lshift()

static uint128_t uint128_lshift ( uint128_t  num, uint8_t  bits  )

inlinestatic

Left shift 128 bit integer.

Note

shift must be 127 bits or less.

Definition at line 191 of file uint128.h.

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uint128_mul()

static uint128_t uint128_mul ( uint128_t  n, uint128_t  m  )

inlinestatic

Multiply two unsigned 128bit integers.

Author

Jacob F. W

Definition at line 177 of file uint128.h.

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uint128_mul64()

static uint128_t uint128_mul64 ( uint64_t  u, uint64_t  v  )

inlinestatic

Multiply two unsigned 64bit integers to get an unsigned 128bit integer.

Author

Jacob F. W

Definition at line 144 of file uint128.h.

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uint128_new()

static uint128_t uint128_new ( uint64_t  h, uint64_t  l  )

inlinestatic

Creates a new uint128_t from a uint64_t.

Definition at line 268 of file uint128.h.

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uint128_rshift()

static uint128_t uint128_rshift ( uint128_t  num, uint8_t  bits  )

inlinestatic

Right shift 128 bit integer.

Note

shift must be 127 bits or less.

Definition at line 210 of file uint128.h.

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uint128_sub()

static uint128_t uint128_sub ( uint128_t  a, uint128_t  b  )

inlinestatic

Subtract one 128bit integer from another.

Author

Jacob F. W

Definition at line 128 of file uint128.h.

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uint128_to_64()

static uint64_t uint128_to_64 ( uint128_t  a )

inlinestatic

Returns the low bits of a 128bit integer.

Definition at line 279 of file uint128.h.

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