From b6d455a02bd338e9dc0faa09d4d8177ecd8d569a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Petr=20Mr=C3=A1zek?= Date: Sun, 10 Apr 2016 15:53:05 +0200 Subject: NOISSUE reorganize and document libraries --- depends/xz-embedded/src/xz_crc32.c | 61 -------------------------------------- 1 file changed, 61 deletions(-) delete mode 100644 depends/xz-embedded/src/xz_crc32.c (limited to 'depends/xz-embedded/src/xz_crc32.c') diff --git a/depends/xz-embedded/src/xz_crc32.c b/depends/xz-embedded/src/xz_crc32.c deleted file mode 100644 index c412662b..00000000 --- a/depends/xz-embedded/src/xz_crc32.c +++ /dev/null @@ -1,61 +0,0 @@ -/* - * CRC32 using the polynomial from IEEE-802.3 - * - * Authors: Lasse Collin - * Igor Pavlov - * - * This file has been put into the public domain. - * You can do whatever you want with this file. - */ - -/* - * This is not the fastest implementation, but it is pretty compact. - * The fastest versions of xz_crc32() on modern CPUs without hardware - * accelerated CRC instruction are 3-5 times as fast as this version, - * but they are bigger and use more memory for the lookup table. - */ - -#include "xz_private.h" - -/* - * STATIC_RW_DATA is used in the pre-boot environment on some architectures. - * See for details. - */ -#ifndef STATIC_RW_DATA -#define STATIC_RW_DATA static -#endif - -STATIC_RW_DATA uint32_t xz_crc32_table[256]; - -XZ_EXTERN void xz_crc32_init(void) -{ - const uint32_t poly = 0xEDB88320; - - uint32_t i; - uint32_t j; - uint32_t r; - - for (i = 0; i < 256; ++i) - { - r = i; - for (j = 0; j < 8; ++j) - r = (r >> 1) ^ (poly & ~((r & 1) - 1)); - - xz_crc32_table[i] = r; - } - - return; -} - -XZ_EXTERN uint32_t xz_crc32(const uint8_t *buf, size_t size, uint32_t crc) -{ - crc = ~crc; - - while (size != 0) - { - crc = xz_crc32_table[*buf++ ^ (crc & 0xFF)] ^ (crc >> 8); - --size; - } - - return ~crc; -} -- cgit v1.2.3