aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libs/xz/liblzma/common/vli_size.c
blob: ec1b4fa488b6afcb5093f56085a13a81cb8d1434 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
///////////////////////////////////////////////////////////////////////////////
//
/// \file       vli_size.c
/// \brief      Calculates the encoded size of a variable-length integer
//
//  Author:     Lasse Collin
//
//  This file has been put into the public domain.
//  You can do whatever you want with this file.
//
///////////////////////////////////////////////////////////////////////////////

#include "common.h"


extern LZMA_API(uint32_t)
lzma_vli_size(lzma_vli vli)
{
	if (vli > LZMA_VLI_MAX)
		return 0;

	uint32_t i = 0;
	do {
		vli >>= 7;
		++i;
	} while (vli != 0);

	assert(i <= LZMA_VLI_BYTES_MAX);
	return i;
}