stdlib_hash_32bit

See also the specification page: stdlib_hash_32bit and stdlib_hash_64bit.

stdlib_hash_32bit (module)

Variables

int_hashinteger, parameter, Default = int32

The number of bits in the output hash

little_endianlogical, parameter, Default = (1==transfer([1_int8, 0_int8], 0_int16))

Interfaces

fnv_1_hash (interface)

fnv_1_hash (interface)

FNV_1 interfaces (Specification: stdlib_hash_32bit and stdlib_hash_64bit)

Procedures:

• int8_fnv_1

• int16_fnv_1

• int32_fnv_1

• int64_fnv_1

• character_fnv_1

pure module function int8_fnv_1(key) -> hash_code

FNV_1 hash function for rank 1 array keys of kind int8

Arguments:

keyinteger(kind=int8), intent(in), dimension(:)

Returns:

hash_codeinteger(kind=int_hash)

pure module function int16_fnv_1(key) -> hash_code

FNV_1 hash function for rank 1 array keys of kind int16

Arguments:

keyinteger(kind=int16), intent(in), dimension(:)

Returns:

hash_codeinteger(kind=int_hash)

pure module function int32_fnv_1(key) -> hash_code

FNV_1 hash function for rank 1 array keys of kind int32

Arguments:

keyinteger(kind=int32), intent(in), dimension(:)

Returns:

hash_codeinteger(kind=int_hash)

pure module function int64_fnv_1(key) -> hash_code

FNV_1 hash function for rank 1 array keys of kind int64

Arguments:

keyinteger(kind=int64), intent(in), dimension(:)

Returns:

hash_codeinteger(kind=int_hash)

elemental module function character_fnv_1(key) -> hash_code

FNV_1 hash function for default character string keys

Arguments:

keycharacter(len=*), intent(in)

Returns:

hash_codeinteger(kind=int_hash)

fnv_1a_hash (interface)

fnv_1a_hash (interface)

FNV_1A interfaces (Specification: stdlib_hash_32bit and stdlib_hash_64bit)

Procedures:

• int8_fnv_1a

• int16_fnv_1a

• int32_fnv_1a

• int64_fnv_1a

• character_fnv_1a

pure module function int8_fnv_1a(key) -> hash_value

FNV_1A hash function for rank 1 array keys of kind int8

Arguments:

keyinteger(kind=int8), intent(in), dimension(:)

Returns:

hash_valueinteger(kind=int_hash)

pure module function int16_fnv_1a(key) -> hash_value

FNV_1A hash function for rank 1 array keys of kind int16

Arguments:

keyinteger(kind=int16), intent(in), dimension(:)

Returns:

hash_valueinteger(kind=int_hash)

pure module function int32_fnv_1a(key) -> hash_value

FNV_1A hash function for rank 1 array keys of kind int32

Arguments:

keyinteger(kind=int32), intent(in), dimension(:)

Returns:

hash_valueinteger(kind=int_hash)

pure module function int64_fnv_1a(key) -> hash_value

FNV_1A hash function for rank 1 array keys of kind int64

Arguments:

keyinteger(kind=int64), intent(in), dimension(:)

Returns:

hash_valueinteger(kind=int_hash)

elemental module function character_fnv_1a(key) -> hash_value

FNV_1A hash function for default character string keys

Arguments:

keycharacter(len=*), intent(in)

Returns:

hash_valueinteger(kind=int_hash)

nmhash32 (interface)

nmhash32 (interface)

NMHASH32 interfaces (Specification: stdlib_hash_32bit and stdlib_hash_64bit)

Procedures:

• int8_nmhash32

• int16_nmhash32

• int32_nmhash32

• int64_nmhash32

• character_nmhash32

pure module function int8_nmhash32(key, seed) -> hash_value

NMHASH32 hash function for rank 1 array keys of kind int8

Arguments:

keyinteger(kind=int8), intent(in), dimension(0:)

seedinteger(kind=int32), intent(in)

Returns:

hash_valueinteger(kind=int32)

pure module function int16_nmhash32(key, seed) -> hash_value

NMHASH32 hash function for rank 1 array keys of kind int16

Arguments:

keyinteger(kind=int16), intent(in), dimension(0:)

seedinteger(kind=int32), intent(in)

Returns:

hash_valueinteger(kind=int32)

pure module function int32_nmhash32(key, seed) -> hash_value

NMHASH32 hash function for rank 1 array keys of kind int32

Arguments:

keyinteger(kind=int32), intent(in), dimension(0:)

seedinteger(kind=int32), intent(in)

Returns:

hash_valueinteger(kind=int32)

pure module function int64_nmhash32(key, seed) -> hash_value

NMHASH32 hash function for rank 1 array keys of kind int64

Arguments:

keyinteger(kind=int64), intent(in), dimension(0:)

seedinteger(kind=int32), intent(in)

Returns:

hash_valueinteger(kind=int32)

elemental module function character_nmhash32(key, seed) -> hash_value

NMHASH32 hash function for default character string keys

Arguments:

keycharacter(len=*), intent(in)

seedinteger(kind=int32), intent(in)

Returns:

hash_valueinteger(kind=int32)

nmhash32x (interface)

nmhash32x (interface)

NMHASH32X interfaces (Specification: stdlib_hash_32bit and stdlib_hash_64bit)

Procedures:

• int8_nmhash32x

• int16_nmhash32x

• int32_nmhash32x

• int64_nmhash32x

• character_nmhash32x

pure module function int8_nmhash32x(key, seed) -> hash_value

NMHASH32 hash function for rank 1 array keys of kind int8

Arguments:

keyinteger(kind=int8), intent(in), dimension(0:)

seedinteger(kind=int32), intent(in)

Returns:

hash_valueinteger(kind=int32)

pure module function int16_nmhash32x(key, seed) -> hash_value

NMHASH32 hash function for rank 1 array keys of kind int16

Arguments:

keyinteger(kind=int16), intent(in), dimension(0:)

seedinteger(kind=int32), intent(in)

Returns:

hash_valueinteger(kind=int32)

pure module function int32_nmhash32x(key, seed) -> hash_value

NMHASH32 hash function for rank 1 array keys of kind int32

Arguments:

keyinteger(kind=int32), intent(in), dimension(0:)

seedinteger(kind=int32), intent(in)

Returns:

hash_valueinteger(kind=int32)

pure module function int64_nmhash32x(key, seed) -> hash_value

NMHASH32 hash function for rank 1 array keys of kind int64

Arguments:

keyinteger(kind=int64), intent(in), dimension(0:)

seedinteger(kind=int32), intent(in)

Returns:

hash_valueinteger(kind=int32)

elemental module function character_nmhash32x(key, seed) -> hash_value

NMHASH32 hash function for default character string keys

Arguments:

keycharacter(len=*), intent(in)

seedinteger(kind=int32), intent(in)

Returns:

hash_valueinteger(kind=int32)

water_hash (interface)

water_hash (interface)

WATER_HASH interfaces (Specification: stdlib_hash_32bit and stdlib_hash_64bit)

Procedures:

• int8_water_hash

• int16_water_hash

• int32_water_hash

• int64_water_hash

• character_water_hash

pure module function int8_water_hash(key, seed) -> hash_code

WATER HASH function for rank 1 array keys of kind int8

Arguments:

keyinteger(kind=int8), intent(in), dimension(0:)

seedinteger(kind=int64), intent(in)

Returns:

hash_codeinteger(kind=int_hash)

pure module function int16_water_hash(key, seed) -> hash_code

WATER HASH function for rank 1 array keys of kind int16

Arguments:

keyinteger(kind=int16), intent(in), dimension(0:)

seedinteger(kind=int64), intent(in)

Returns:

hash_codeinteger(kind=int_hash)

pure module function int32_water_hash(key, seed) -> hash_code

WATER HASH function for rank 1 array keys of kind int32

Arguments:

keyinteger(kind=int32), intent(in), dimension(0:)

seedinteger(kind=int64), intent(in)

Returns:

hash_codeinteger(kind=int_hash)

pure module function int64_water_hash(key, seed) -> hash_code

WATER HASH function for rank 1 array keys of kind int64

Arguments:

keyinteger(kind=int64), intent(in), dimension(0:)

seedinteger(kind=int64), intent(in)

Returns:

hash_codeinteger(kind=int_hash)

elemental module function character_water_hash(key, seed) -> hash_code

WATER hash function for default character string keys

Arguments:

keycharacter(len=*), intent(in)

seedinteger(kind=int64), intent(in)

Returns:

hash_codeinteger(kind=int_hash)

new_water_hash_seed (interface)

module subroutine new_water_hash_seed(seed)

(Specification: stdlib_hash_32bit and stdlib_hash_64bit)

Arguments:

seedinteger(kind=int64), intent(inout)

new_nmhash32_seed (interface)

module subroutine new_nmhash32_seed(seed)

(Specification: stdlib_hash_32bit and stdlib_hash_64bit)

Arguments:

seedinteger(kind=int32), intent(inout)

new_nmhash32x_seed (interface)

module subroutine new_nmhash32x_seed(seed)

(Specification: stdlib_hash_32bit and stdlib_hash_64bit)

Arguments:

seedinteger(kind=int32), intent(inout)

Procedures

fibonacci_hash (function)

elemental function fibonacci_hash(key, nbits) -> sample

Maps the 32 bit integer key to an unsigned integer value with only nbits bits where nbits is less than 32 (Specification: stdlib_hash_32bit and stdlib_hash_64bit)

Arguments:

keyinteger(kind=int32), intent(in)

nbitsinteger, intent(in)

Returns:

sampleinteger(kind=int32)

universal_mult_hash (function)

elemental function universal_mult_hash(key, seed, nbits) -> sample

Uses the “random” odd 32 bit integer seed to map the 32 bit integer key to an unsigned integer value with only nbits bits where nbits is less than 32 (Specification: stdlib_hash_32bit and stdlib_hash_64bit)

Arguments:

keyinteger(kind=int32), intent(in)

seedinteger(kind=int32), intent(in)

nbitsinteger, intent(in)

Returns:

sampleinteger(kind=int32)

odd_random_integer (subroutine)

subroutine odd_random_integer(harvest)

Returns a 32 bit pseudo random integer, harvest, distributed uniformly over the odd integers of the int32 kind. (Specification: stdlib_hash_32bit and stdlib_hash_64bit)

Arguments:

harvestinteger(kind=int32), intent(out)