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41. 发明申请

US20140046994A1 OPERATION CIRCUIT AND CONTROL METHOD OF OPERATION CIRCUIT 审中-公开
标题翻译：操作电路和操作电路的控制方法
公开(公告)号：US20140046994A1
公开(公告)日：2014-02-13
申请号：US13907979
申请日：2013-06-03
申请人： FUJITSU LIMITED
发明人： Shiro KAMOSHIDA
IPC分类号： G06F7/483
CPC分类号： G06F7/483 , G06F7/491 , G06F2207/4911
摘要： An operation circuit includes: a register that holds a decimal floating point number of a DPD (densely-packed decimal) format having a sign field, a combination field and a succeeding mantissa field; a first logical operation circuit that performs an operation including an exclusive logical sum operation and a modulo operation on values of the combination field; a second logical operation circuit that performs an operation including an exclusive logical sum operation and a modulo operation on values of the succeeding mantissa field; and a third logical operation circuit that performs a logical operation on a value of the sign field, an operation result of the first logical operation circuit and an operation result of the second logical operation circuit.
摘要翻译：运算电路包括：寄存器，其保存具有符号字段，组合字段和后续尾数字段的DPD（密集十进制）格式的十进制浮点数; 第一逻辑运算电路，对所述组合字段的值执行包括异或逻辑和运算和模运算的运算; 第二逻辑运算电路，对所述后续尾数字段的值进行包括异或逻辑和运算和模运算的动作; 以及第三逻辑运算电路，对符号场的值，第一逻辑运算电路的运算结果和第二逻辑运算电路的运算结果进行逻辑运算。

42. 发明申请

US20140019506A1 METHOD AND APPARATUS FOR DECIMAL FLOATING-POINT DATA LOGICAL EXTRACTION 有权
标题翻译：用于十进制浮点数据逻辑提取的方法和装置
公开(公告)号：US20140019506A1
公开(公告)日：2014-01-16
申请号：US13991885
申请日：2011-12-23
申请人： Shihjong J. Kuo
发明人： Shihjong J. Kuo
IPC分类号： G06F7/483
CPC分类号： G06F7/483 , G06F5/00 , G06F7/491 , G06F2205/003 , G06F2207/4911
摘要： Embodiments of systems, apparatuses, and methods for performing BIDSplit instructions in a computer processor are described. In some embodiments, the execution of a BIDSplit instruction tests the encoding of a binary-integer decimal source value and extracts a sign, exponent, and/or significand into a destination.
摘要翻译：描述了用于在计算机处理器中执行BIDSplit指令的系统，装置和方法的实施例。在一些实施例中，BIDSplit指令的执行测试二进制整数十进制源值的编码，并向目的地提取符号，指数和/或有效数。

43. 发明授权

US08560591B2 Detection of potential need to use a larger data format in performing floating point operations 有权
标题翻译：检测潜在需要在执行浮点运算时使用较大的数据格式
公开(公告)号：US08560591B2
公开(公告)日：2013-10-15
申请号：US11740165
申请日：2007-04-25
申请人： Shawn D. Lundvall , Ronald M. Smith, Sr. , Phil C. Yeh , Michael Frederic Cowlishaw
发明人： Shawn D. Lundvall , Ronald M. Smith, Sr. , Phil C. Yeh , Michael Frederic Cowlishaw
IPC分类号： G06F7/38 , G06F15/00
CPC分类号： G06F9/30036 , G06F7/491 , G06F9/30003 , G06F9/30014 , G06F9/30105 , G06F9/3861 , G06F9/45504 , G06F2207/4911
摘要： Detection of whether a result of a floating point operation is safe. Characteristics of the result are examined to determine whether the result is safe or potentially unsafe, as defined by the user. An instruction is provided to facilitate detection of safe or potentially unsafe results.
摘要翻译：检测浮点运算的结果是否安全。检查结果的特征以确定结果是安全的还是潜在的不安全的，如用户定义的。提供了一个指导，以便于检测安全或潜在不安全的结果。

44. 发明授权

US07685214B2 Order-preserving encoding formats of floating-point decimal numbers for efficient value comparison 有权
标题翻译：浮点十进制数的订单保留编码格式，用于有效的价值比较
公开(公告)号：US07685214B2
公开(公告)日：2010-03-23
申请号：US11213551
申请日：2005-08-26
申请人： Yao-Ching Stephen Chen , Michael Frederic Cowlishaw , Christopher J. Crone , Fung Lee , Ronald Morton Smith, Sr. , Guogen Zhang , Qinghua Zou
发明人： Yao-Ching Stephen Chen , Michael Frederic Cowlishaw , Christopher J. Crone , Fung Lee , Ronald Morton Smith, Sr. , Guogen Zhang , Qinghua Zou
IPC分类号： G06F7/00 , G06F15/00 , G06F7/38 , H03M5/00
CPC分类号： G06F7/026 , G06F7/491 , G06F2207/4911 , G11B2020/1457 , H03M7/24
摘要： A method for conversion between a decimal floating-point number and an order-preserving format has been disclosed. The method encodes numbers in the decimal floating-point format into a format which preserves value ordering. This encoding allows for fast and direct string comparison of two values. Such an encoding provides normalized representations for decimal floating-point numbers and supports type-insensitive comparisons. Type-insensitive comparisons are often used in database management systems, where the data type is not specified for values to compare. In addition, the original decimal floating-point format can be recovered from the order-preserving format.
摘要翻译：已经公开了用于在十进制浮点数和订单保留格式之间进行转换的方法。该方法将十进制浮点格式的数字编码为保留值排序的格式。该编码允许对两个值进行快速和直接的字符串比较。这样的编码提供十进制浮点数的归一化表示，并且支持类型不敏感的比较。类型不敏感的比较通常用于数据库管理系统，其中数据类型未指定用于比较的值。另外，原始的十进制浮点格式可以从订单保留格式中恢复。

45. 发明申请

US20080270509A1 EXTRACT BIASED EXPONENT OF DECIMAL FLOATING POINT DATA 有权
标题翻译：提取浮点数据的偏移量
公开(公告)号：US20080270509A1
公开(公告)日：2008-10-30
申请号：US11770861
申请日：2007-06-29
申请人： Shawn D. Lundvall , Eric M. Schwarz , Ronald M. Smith , Phil C. Yeh
发明人： Shawn D. Lundvall , Eric M. Schwarz , Ronald M. Smith , Phil C. Yeh
IPC分类号： G06F7/38
CPC分类号： G06F7/491 , G06F9/30014 , G06F9/30025 , G06F9/30036 , G06F2207/4911
摘要： A decimal floating point finite number in a decimal floating point format is composed from the number in a different format. A decimal floating point format includes fields to hold information relating to the sign, exponent and significand of the decimal floating point finite number. Other decimal floating point data, including infinities and NaNs (not a number), are also composed. Decimal floating point data are also decomposed from the decimal floating point format to a different format. For composition and decomposition, one or more instructions may be employed, including an insert biased exponent or extract biased exponent instruction.
摘要翻译：十进制浮点格式的十进制浮点有限数字由不同格式的数字组成。十进制浮点格式包括用于保存与十进制浮点有限数字的符号，指数和有效数相关的信息的字段。其他十进制浮点数据也包括无限和无数（不是数字）。十进制浮点数据也从十进制浮点格式分解成不同的格式。对于组合和分解，可以使用一个或多个指令，包括插入偏移指数或提取偏移指数指令。

46. 发明申请

US20080215659A1 Round for Reround Mode in a Decimal Floating Point Instruction 有权
标题翻译：在十进制浮点指令中对于Reround模式进行循环
公开(公告)号：US20080215659A1
公开(公告)日：2008-09-04
申请号：US11680894
申请日：2007-03-01
申请人： Michael F. Cowlishaw , Eric M. Schwarz , Ronald M. Smith , Phil C. Yeh
发明人： Michael F. Cowlishaw , Eric M. Schwarz , Ronald M. Smith , Phil C. Yeh
IPC分类号： G06F7/38
CPC分类号： G06F7/49957 , G06F7/386 , G06F7/483 , G06F7/491 , G06F7/49915 , G06F7/49947 , G06F7/49963 , G06F7/49968 , G06F7/49973 , G06F7/49978 , G06F7/49984 , G06F9/30014 , G06F17/10
摘要： a round-far-reround mode (preferably in a BID encoded Decimal format) of a floating point instruction prepares a result for later rounding to a variable number of digits by detecting that the least significant digit may be a 0, and if so changing it to 1 when the trailing digits are not all 0. A subsequent reround instruction is then able to round the result to any number of digits at least 2 fewer than the number of digits of the result. An optional embodiment saves a tag indicating the fact that the low order digit of the result is 0 or 5 if the trailing bits are non-zero in a tag field rather than modify the result. Another optional embodiment also saves a half-way-and-above indicator when the trailing digits represent a decimal with a most significant digit having a value of 5. An optional subsequent rewound instruction is able to round the result to any number of digits fewer or equal, to the number of digits of the result using the saved tags.
摘要翻译：通过检测最低有效数字可能为0，浮点指令的圆形远景重放模式（优选地以BID编码的十进制格式）准备结果以便稍后舍入到可变数目的数字，并且如果这样改变它当尾数不全为0时，随后的再循环指令能够将结果舍入到任意数量的数字至少比结果位数少2个。可选实施例保存标签，其指示结果的低位数字为0或5的事实，如果拖尾位在标签字段中不为零，而不是修改结果。另一个可选的实施例也可以在尾随数字表示具有值为5的最高有效数字的十进制数时保存中途和上述指示符。可选的后续倒带指令能够将结果舍入到任何数量的数字或更少与使用保存的标签的结果数字相等。

47. 发明授权

US07136891B2 Arithmetic and relational operations 失效
标题翻译：算术和关系操作
公开(公告)号：US07136891B2
公开(公告)日：2006-11-14
申请号：US10317340
申请日：2002-12-12
申请人： Rajendra K. Bera
发明人： Rajendra K. Bera
IPC分类号： G06F7/38
CPC分类号： G06F7/491
摘要： In a method of carrying out arithmetic and relational operations on decimal numerals of arbitrary size, the operations produce exact results if the decimal numerals involved are terminating or repeating. The result of arithmetic operations is flagged to indicate whether the result is a terminating or a repeating numeral. To maintain computational accuracy, numbers are converted to rational fractions, whenever necessary and computations are performed using such fractions. The sign, decimal point, and digits comprising a number are treated as individual character symbols. All arithmetical and relational operations are performed on character strings, rather than on binary maps of the relevant numbers.
摘要翻译：在对任意大小的十进制数进行运算和关系运算的方法中，如果涉及到的十进制数终止或重复，则运算产生精确的结果。标记算术运算的结果，以指示结果是终止还是重复数字。为了保持计算精度，必要时将数字转换为理性分数，并使用这些分数进行计算。包含数字的符号，小数点和数字被视为单个字符符号。所有算术和关系操作都是在字符串上执行的，而不是相关数字的二进制映射。

48. 发明申请

US20060179098A1 System and method for reduction of leading zero detect for decimal floating point numbers 审中-公开
标题翻译：用于减小十进制浮点数的前导零检测的系统和方法
公开(公告)号：US20060179098A1
公开(公告)日：2006-08-10
申请号：US11054234
申请日：2005-02-09
申请人： Michael Kelly , Wen Li , Eric Schwarz , Wai Wong
发明人： Michael Kelly , Wen Li , Eric Schwarz , Wai Wong
IPC分类号： G06F7/38
CPC分类号： G06F7/74 , G06F7/491 , G06F2207/4911
摘要： A method for leading zero detection. The method includes receiving DPD encoded data representing a three digit BCD number and determining directly from the DPD encoded data if the BCD number represented by the DPD encoded data contains at least one leading zero digit. A group one switch is set to zero if it was determined that the BCD number represented by the DPD encoded data contains at least one leading zero digit and set to one otherwise. The method also includes determining directly from the DPD encoded data if the BCD number represented by the DPD encoded data contains at least two leading zero digits. A group two switch is set to zero if it was determined that the BCD number represented by the DPD encoded data contains at least two leading zero digits and set to one otherwise. The method further includes determining directly from the DPD encoded data if the BCD number represented by the DPD encoded data contains three leading zero digits. A group three switch is set to zero if was determined that the BCD number represented by the DPD encoded data contains three leading zero digits and set to one otherwise.
摘要翻译：一种引导零检测的方法。如果由DPD编码数据表示的BCD数字包含至少一个前导零数字，则该方法包括接收表示三位BCD号码的DPD编码数据，并直接从DPD编码数据确定。如果确定由DPD编码数据表示的BCD数字包含至少一个前导零数字并且另外设置为一个，则将一组开关设置为零。如果由DPD编码数据表示的BCD数字包含至少两个前导零数字，则该方法还包括直接从DPD编码数据确定。如果确定由DPD编码数据表示的BCD数字包含至少两个前导零数字并且另外设置为一个，则组二开关被设置为零。如果由DPD编码数据表示的BCD数字包含三个前导零数字，则该方法还包括直接从DPD编码数据确定。如果确定由DPD编码数据表示的BCD数字包含三个前导零数字并且另外设置为一个，则组三开关被设置为零。

49. 发明申请

US20060155796A1 System and methods for large-radix computer processing 有权
标题翻译：大型计算机处理系统和方法
公开(公告)号：US20060155796A1
公开(公告)日：2006-07-13
申请号：US11031749
申请日：2005-01-07
申请人： Gregory Granger
发明人： Gregory Granger
IPC分类号： G06F7/38
CPC分类号： G06F7/491 , G06F2207/3896
摘要： Systems and methods for performing large-radix numeric operations. A first number may be segmented into large-radix segments, wherein numbers of the segments are generated such that radix of the segment is greater than radix of the first number. As a result, a plurality of disparate processor-based computing systems may be configured to perform various numeric operations on the large-radix segments of the number and output results of a numeric operation as a number whose radix is equal to the radix of the first number.
摘要翻译：用于执行大基数数字操作的系统和方法。第一数字可以被分割为大基数段，其中生成段的数目，使得该段的基数大于第一个数的基数。结果，多个不同的基于处理器的计算系统可以被配置为对数字操作的数字和输出结果的大基数执行各种数字操作，其数量等于基数数。

50. 发明申请

US20060047738A1 Decimal rounding mode which preserves data information for further rounding to less precision 审中-公开
标题翻译：十进制舍入模式，保留数据信息进一步舍入到较少的精度
公开(公告)号：US20060047738A1
公开(公告)日：2006-03-02
申请号：US10930129
申请日：2004-08-31
申请人： Eric Schwarz , Martin Schmookler
发明人： Eric Schwarz , Martin Schmookler
IPC分类号： G06F7/38
CPC分类号： G06F7/49947 , G06F7/491 , G06F7/49963
摘要： A method of processing data employs a new rounding mode called “round for reround” on the original arithmetic instruction in the hardware precision, and then 2) invoking an instruction which specifies a variable rounding precision and possibly explicitly sets the rounding mode which we have called the ReRound instruction. The precise result of the arithmetic operation is first truncated to the hardware format precision “p”, forming an intermediate result. If only zeros are dropped during truncation, then the intermediate result is equal to the precise result, and this result is said to be “exact”, otherwise, it is “inexact”. When the intermediate result is inexact and its least significant digit is either zero or five, then that digit is incremented to one or six respectively forming the rounded result. Thus, when the least significant digit of a rounded result is zero or five the result could be construed to be exact or exactly halfway between two machine representations if it were later rounded to one less digit of precision. For all other values, it is obvious that the result is inexact and not halfway between two machine representations for later roundings to fewer than “p” digits of precision. A nice mathematical property of this rounding mode is that results stay ordered and in a hardware implementation it is guaranteed that the incrementation of the least significant digit does not cause a carry into the next digit of the result.
摘要翻译：处理数据的方法采用在硬件精度上对原始算术指令称为“round for reround”的新的舍入模式，然后2）调用指定变量舍入精度的指令，并可能明确地设置我们称之为舍入模式 ReRound指令。算术运算的精确结果首先被截断为硬件格式精度“p”，形成中间结果。如果在截断期间仅删除零，则中间结果等于精确结果，并且该结果被称为“精确”，否则为“不精确”。当中间结果不精确，其最低有效位为零或五时，则该数字分别增加到一个或六个，分别形成舍入结果。因此，当舍入结果的最低有效数字为零或五时，如果结果被稍后舍入为一个较小的精度数字，则结果可以被解释为两个机器表示之间的精确或准确的中间。对于所有其他值，很明显，结果是不精确的，而不是两个机器表示之间的中间，以便稍后的舍入少于“p”位精度。这种舍入模式的一个很好的数学属性是结果保持有序，并且在硬件实现中，保证最低有效位的递增不会导致结果的下一个数字的进位。

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