fr.cu File Reference

#include <stdio.h>
#include "fr.cuh"

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Functions
__device__ __host__ void	fr_zero (fr_t &z)
	Sets the value of z to zero. More...
__device__ __host__ void	fr_one (fr_t &z)
	Sets the value of z to one. More...
__device__ void	fr_print (const char *s, const fr_t &x)
	prints the canonical representation of x to STDOUT. More...
__device__ __host__ void	fr_fromUint64 (fr_t &z, const uint64_t *x)
	Converts from uint64_t[4] to a residue modulo r, without reduction. More...
__device__ void	fr_toUint64 (const fr_t &x, uint64_t *z)
	Converts fr_t to uint64_t[4]. More...
__global__ void	fr_eq_wrapper (uint8_t *eq, int count, const fr_t *x, const fr_t *y)
	Checks equality of two arrays of fr_t, element wise, and store in a byte array. More...

Function Documentation

fr_eq_wrapper()

__global__ void fr_eq_wrapper	(	uint8_t *	eq,
		int	count,
		const fr_t *	x,
		const fr_t *	y
	)

Checks equality of two arrays of fr_t, element wise, and store in a byte array.

Uses the CUDA device to perform a fast comparision between two arrays of fr_t. This function has no limitation on the number and size of blocks.

Parameters

[out]	eq	Array of count bytes, such that eq[i]==1 if x[i] == y[i], zero otherwise.
[in]	count	Number of elements to be compared
[in]	x	First array
[in]	y	Second array

Returns

void

Definition at line 99 of file fr.cu.

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fr_fromUint64()

__device__ __host__ void fr_fromUint64	(	fr_t &	z,
		const uint64_t *	x
	)

Converts from uint64_t[4] to a residue modulo r, without reduction.

Parameters

[out]	z	Residue modulo r
[in]	x	Array of uint64_t

Returns

void

Definition at line 59 of file fr.cu.

fr_one()

__device__ __host__ void fr_one

(

fr_t &

z

)

Sets the value of z to one.

Parameters

[out]

z

Returns

void

Definition at line 26 of file fr.cu.

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fr_print()

__device__ void fr_print	(	const char *	s,
		const fr_t &	x
	)

prints the canonical representation of x to STDOUT.

Prints the canonical hexadecimal representation of x to stdout, followed by linefeed; prints with leading zeros, and without the hex prefix.

Parameters

[in]	s	Description string
[in]	x

Returns

void

Definition at line 41 of file fr.cu.

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fr_toUint64()

__device__ void fr_toUint64	(	const fr_t &	x,
		uint64_t *	z
	)

Converts fr_t to uint64_t[4].

Converts uint64_t[4] to fr_t. The 256-bit value in x is reduced to the canonical residue before being stored into z. The original value of x is unchanged.

Parameters

[out]	z	Pointer to destination array.
[in]	x	fr_t to be converted.

Returns

void

Definition at line 76 of file fr.cu.

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fr_zero()

__device__ __host__ void fr_zero

(

fr_t &

z

)

Sets the value of z to zero.

Parameters

[out]

z

Returns

void

Definition at line 15 of file fr.cu.

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