[mirror_ubuntu-eoan-kernel.git] / include / linux / ascii85.h

/*
 * SPDX-License-Identifier: GPL-2.0
 *
 * Copyright (c) 2008 Intel Corporation
 * Copyright (c) 2018 The Linux Foundation. All rights reserved.
 */

#ifndef _ASCII85_H_
#define _ASCII85_H_

#include <linux/kernel.h>

#define ASCII85_BUFSZ 6

static inline long
ascii85_encode_len(long len)
{
	return DIV_ROUND_UP(len, 4);
}

static inline const char *
ascii85_encode(u32 in, char *out)
{
	int i;

	if (in == 0)
		return "z";

	out[5] = '\0';
	for (i = 5; i--; ) {
		out[i] = '!' + in % 85;
		in /= 85;
	}

	return out;
}

#endif
Commit	Line	Data
489cae63 JC	1	/*
	2	* SPDX-License-Identifier: GPL-2.0
	3	*
	4	* Copyright (c) 2008 Intel Corporation
	5	* Copyright (c) 2018 The Linux Foundation. All rights reserved.
	6	*/
	7
	8	#ifndef _ASCII85_H_
	9	#define _ASCII85_H_
	10
	11	#include <linux/kernel.h>
	12
	13	#define ASCII85_BUFSZ 6
	14
	15	static inline long
	16	ascii85_encode_len(long len)
	17	{
	18	return DIV_ROUND_UP(len, 4);
	19	}
	20
	21	static inline const char *
	22	ascii85_encode(u32 in, char *out)
	23	{
	24	int i;
	25
	26	if (in == 0)
	27	return "z";
	28
	29	out[5] = '\0';
	30	for (i = 5; i--; ) {
	31	out[i] = '!' + in % 85;
	32	in /= 85;
	33	}
	34
	35	return out;
	36	}
	37
	38	#endif