密碼學(xué)界牛人Victor Shoup用C++編寫數(shù)論類庫。 NTL is a high-performance, portable C++ library providing data structures and algorithms for arbitrary length integers for vectors, matrices, and polynomials over the integers and over finite fields and for arbitrary precision floating point arithmetic. NTL provides high quality implementations of state-of-the-art algorithms for: * arbitrary length integer arithmetic and arbitrary precision floating point arithmetic * polynomial arithmetic over the integers and finite fields including basic arithmetic, polynomial factorization, irreducibility testing, computation of minimal polynomials, traces, norms, and more * lattice basis reduction, including very robust and fast implementations of Schnorr-Euchner, block Korkin-Zolotarev reduction, and the new Schnorr-Horner pruning heuristic for block Korkin-Zolotarev * basic linear algebra over the integers, finite fields, and arbitrary precision floating point numbers.
標(biāo)簽： high-performance providing portable library
上傳時(shí)間： 2014-01-04
上傳用戶：exxxds
pccard driver s3c2440.The S3C2440A offers outstanding features with its CPU core, a 16/32-bit ARM920T RISC processor designed by Advanced RISC Machines, Ltd. The ARM920T implements MMU, AMBA BUS, and Harvard cache architecture with separate 16KB instruction and 16KB data caches, each with an 8-word line length.
標(biāo)簽： outstanding S3C2440A features pccard
上傳時(shí)間： 2013-12-24
上傳用戶：lizhen9880
用兩個(gè)數(shù)組實(shí)現(xiàn)的基數(shù)排序方法，時(shí)間為（array.length）的平方
上傳時(shí)間： 2017-03-10
上傳用戶：yuanyuan123
XTHIDE is a GUI that allows the user to hide a text message in an image file. The user will be asked for a key that will be used to both encode and decode the text into an image. The key can be of length from 2 to 900 characters. The encryption pattern for a key hell is not a subset of the encryption pattern for hello . See help. Created with version 7.01.
標(biāo)簽： user message XTHIDE allows
上傳時(shí)間： 2013-12-26
上傳用戶：erkuizhang
Measuring Frequency Content in Signals I this section we will study some non parametric methods for spectrum estimation of a stochastic process. These methods are described in the literature. All methods are based on the Periodogram which is defined for a sequence x[n] with length N according to
標(biāo)簽： parametric Measuring Frequency Content
上傳時(shí)間： 2017-03-20
上傳用戶：秦莞爾w
使用FPGA/CPLD設(shè)置語音AD、DA轉(zhuǎn)換芯片AIC23，F(xiàn)PGA/CPLD系統(tǒng)時(shí)鐘為24.576MHz 1、AIC系統(tǒng)時(shí)鐘為12.288MHz，SPI時(shí)鐘為6.144MHz 2、AIC處于主控模式 3、input bit length 16bit output bit length 16bit MSB first 4、幀同步在96KHz
上傳時(shí)間： 2013-12-20
上傳用戶：二驅(qū)蚊器
In some graphs, the shortest path is given by optimizing two different metrics: the sum of weights of the edges and the number of edges. For example: if two paths with equal cost exist then, the path with the least number of edges is chosen as the shortest path. Given this metric, you have find out the shortest path between a given pair of vertices in the input graph. The output should be the number of edges on the path, the cost of the shortest path, and the path itself. Input is the adjacency matrix and the two vertices.
標(biāo)簽： optimizing different the shortest
上傳時(shí)間： 2014-10-25
上傳用戶：1159797854
This code implements the arithmetic coding algorithm used for text compression. At present it takes an input of fixed length but that can be modified in the code as required.
標(biāo)簽： compression arithmetic implements algorithm
上傳時(shí)間： 2017-04-18
上傳用戶：wangzhen1990
伸展樹，基本數(shù)據(jù)結(jié)構(gòu)，The tree is drawn in such a way that both of the edges down from a node are the same length. This length is the minimum such that the two subtrees are separated by at least two blanks.
標(biāo)簽： 樹
上傳時(shí)間： 2017-05-07
上傳用戶：JIUSHICHEN
摘 要 文章以空間監(jiān)控系統(tǒng)為背景,深入研究了JPEG圖像壓縮標(biāo)準(zhǔn)的實(shí)現(xiàn)方法,并基于FPGA對(duì)其進(jìn)行了實(shí)現(xiàn)和優(yōu)化。文中給出了詳細(xì)的實(shí)現(xiàn)方法和優(yōu)化過程,測(cè)試表明達(dá)到了很好的效果。 簡(jiǎn)單介紹了有損靜態(tài)圖像壓縮當(dāng)前有兩種比較流行的標(biāo)準(zhǔn)JPEG和JPEG2000。說明了用JPEG方法壓縮的原因。 介紹JPEG基本原理：JPEG對(duì)灰度圖像的壓縮處理過程主要包括:圖像分割,離散余弦變換(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脈沖編碼調(diào)制(Differential Pulse Code Modulation,DPCM)對(duì)直流系數(shù)(DC),行程長度編碼(Run-Length Encoding,RLE)對(duì)交流系數(shù)(AC),霍夫曼(Huffman)編碼等。 JPEG標(biāo)準(zhǔn)的特點(diǎn)是離散余弦變換。 比較詳細(xì)介紹壓縮系統(tǒng)的構(gòu)成和實(shí)現(xiàn)。實(shí)現(xiàn)提及步驟， JPEG壓縮模塊設(shè)計(jì)和編碼模塊實(shí)現(xiàn)細(xì)節(jié)。
標(biāo)簽： JPEG FPGA 實(shí)現(xiàn)方法 監(jiān)控系統(tǒng)
上傳時(shí)間： 2013-12-25
上傳用戶：410805624
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