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1. 发明申请

US20170371656A9 DETECTION OF POTENTIAL NEED TO USE A LARGER DATA FORMAT IN PERFORMING FLOATING POINT OPERATIONS 有权
公开(公告)号：US20170371656A9
公开(公告)日：2017-12-28
申请号：US14193322
申请日：2014-02-28
申请人： International Business Machines Corporation
发明人： Michael F. Cowlishaw , Shawn D. Lundvall , Ronald M. Smith, SR. , Phil C. Yeh
IPC分类号： G06F9/30 , G06F9/38 , G06F7/491 , G06F9/455
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.

2. 发明申请

US20170199724A1 Round For Reround Mode In A Decimal Floating Point Instruction 有权
公开(公告)号：US20170199724A1
公开(公告)日：2017-07-13
申请号：US15470692
申请日：2017-03-27
申请人： International Business Machines Corporation
发明人： Michael F. Cowlishaw , Eric M. Schwarz , Ronald M. Smith, SR. , Phil C. Yeh
IPC分类号： G06F7/499 , G06F7/483 , G06F7/38 , G06F7/491
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-for-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 reround 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.

3. 发明申请

US20170192750A1 Numeric conversion method and electronic device 审中-公开
公开(公告)号：US20170192750A1
公开(公告)日：2017-07-06
申请号：US15244697
申请日：2016-08-23
申请人： Le Holdings (Beijing) Co., Ltd. , Lemobile Information Technology (Beijing) Co., Ltd.
发明人： Jianjun Wei
IPC分类号： G06F7/491
CPC分类号： G06F7/491
摘要： The application provides a numeric conversion method, an electronic device, and a mobile phone. The numeric conversion method includes: first, acquiring the type of language used by a user; acquiring decimal counting units corresponding to the type of language used by the user; determining a position for adding one or more decimal counting units corresponding to the type of language used by the user into a numeric value, the numeric value comprising a numeric value input by the user and a numeric value obtained by operation; and at each position, adding a decimal counting unit corresponding to the position to obtain a converted numeric value. Therefore, the type of language used by a user can be recognized, and numeric conversion can be adaptively adjusted according to the type of language used by the user, to meet the reading requirements of different users, and facilitate users' reading, thereby avoiding the phenomenon of incorrect input or incorrect reading, and improving the user experience.

4. 发明申请

US20170192747A1 INFORMATION PROCESSING APPARATUS AND DECIMAL NUMBER CONVERSION METHOD 审中-公开
公开(公告)号：US20170192747A1
公开(公告)日：2017-07-06
申请号：US15372469
申请日：2016-12-08
申请人： FUJITSU LIMITED
发明人： Minoru Nakamura
IPC分类号： G06F5/00
CPC分类号： G06F5/00 , G06F7/491
摘要： A memory stores conversion data that indicates correspondence between each four-bit string in binary expression and a single digit in decimal expression. A processor selects four consecutive bits out of binary number data and, with reference to the conversion data, determines a value of one digit of decimal number data from a position of the selected four bits in the binary number data and a value of at least part of the selected four bits. The processor then subtracts a binary number corresponding to the determined value of the one digit from the binary number data, thus calculating a difference between them. The processor selects, out of the difference produced by the subtracting, another four consecutive bits located below the previously selected four bits and repeats the above determining to determine another decimal digit so as to convert the binary number data into decimal form.

5. 发明申请

US20170024207A1 Decomposition of Decimal Floating Point Data 有权
标题翻译：十进制浮点数据的分解
公开(公告)号：US20170024207A1
公开(公告)日：2017-01-26
申请号：US15283458
申请日：2016-10-03
申请人： International Business Machines Corporation
发明人： Shawn D Lundvall , Eric M Schwarz , Ronald M Smith, SR. , Phil C Yeh
IPC分类号： G06F9/30 , G06F7/491 , H03M7/24
CPC分类号： G06F9/30025 , G06F7/491 , G06F9/30036 , G06F2207/4911 , H03M7/24
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.
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。

6. 发明授权

US08423595B2 Convert significand of decimal floating point data to packed decimal format 有权
标题翻译：将十进制浮点数据的有效位转换为压缩十进制格式
公开(公告)号：US08423595B2
公开(公告)日：2013-04-16
申请号：US11781574
申请日：2007-07-23
申请人： Shawn D. Lundvall , Eric M. Schwarz , Ronald M. Smith, Sr. , Phil C. Yeh
发明人： Shawn D. Lundvall , Eric M. Schwarz , Ronald M. Smith, Sr. , Phil C. Yeh
IPC分类号： G06F15/00
CPC分类号： G06F7/38 , G06F7/483 , G06F7/491 , G06F9/30014 , G06F9/30025 , G06F9/30036
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 one or more convert instructions.
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，包括一个或多个转换指令。

7. 发明申请

US20120047190A1 Composition of Decimal Floating Point Data 有权
标题翻译：十进制浮点数据的组成
公开(公告)号：US20120047190A1
公开(公告)日：2012-02-23
申请号：US13284125
申请日：2011-10-28
申请人： Shawn D. Lundvall , Eric M. Schwarz , Ronald M. Smith, SR. , Phil C. Yeh
发明人： Shawn D. Lundvall , Eric M. Schwarz , Ronald M. Smith, SR. , Phil C. Yeh
IPC分类号： G06F7/485 , G06F7/483
CPC分类号： G06F9/30025 , G06F7/491 , G06F9/30036 , G06F2207/4911 , H03M7/24
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.
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。

8. 发明授权

US08060545B2 Composition of decimal floating point data, and methods therefor 有权
标题翻译：十进制浮点数据的组成及其方法
公开(公告)号：US08060545B2
公开(公告)日：2011-11-15
申请号：US11840323
申请日：2007-08-17
申请人： Shawn D. Lundvall , Eric M. Schwarz , Ronald M. Smith, Sr. , Phil C. Yeh
发明人： Shawn D. Lundvall , Eric M. Schwarz , Ronald M. Smith, Sr. , Phil C. Yeh
IPC分类号： G06F15/00
CPC分类号： G06F9/30025 , G06F7/491 , G06F9/30036 , G06F2207/4911 , H03M7/24
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.
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。

9. 发明授权

US08051119B2 Decomposition of decimal floating point data 有权
标题翻译：分解十进制浮点数据
公开(公告)号：US08051119B2
公开(公告)日：2011-11-01
申请号：US11840345
申请日：2007-08-17
申请人： Shawn D. Lundvall , Eric M. Schwarz , Ronald M. Smith, Sr. , Phil C. Yeh
发明人： Shawn D. Lundvall , Eric M. Schwarz , Ronald M. Smith, Sr. , Phil C. Yeh
IPC分类号： G06F15/00
CPC分类号： G06F9/30025 , G06F7/491 , G06F9/30036 , G06F2207/4911 , H03M7/24
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.
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。

10. 发明申请

US20100146030A1 Combined Binary/Decimal Fixed-Point Multiplier and Method 失效
标题翻译：组合二进制/十进制定点乘数和方法
公开(公告)号：US20100146030A1
公开(公告)日：2010-06-10
申请号：US12329686
申请日：2008-12-08
申请人： Mark Alan Erle , Brian John Hickmann
发明人： Mark Alan Erle , Brian John Hickmann
IPC分类号： G06F7/52
CPC分类号： G06F7/491 , G06F2207/4915
摘要： A combined binary/decimal fixed-point multiplier that uses BCD-4221 recoding for the decimal digits. This allows the use of binary carry-save hardware to perform decimal addition with a small correction. The described designs provide an improved reduction tree organization to reduce the area and delay of the multiplier and improved reduction tree components that leverage the redundant decimal encodings to help reduce delay. A split reduction tree architecture is also introduced that reduces the delay of the binary product with only a small increase in total area. Area and delay estimates are presented that show that the proposed designs have significant area improvements over separate binary and decimal multipliers while still maintaining similar latencies for both decimal and binary operations.
摘要翻译：使用BCD-4221重新编码为十进制数字的组合二进制/十进制定点乘数。这允许使用二进制进位保存硬件来执行小数加法与小修正。所描述的设计提供了改进的减少树组织以减少乘法器的面积和延迟以及利用冗余十进制编码的减少树组件的改进以帮助减少延迟。还引入了分解还原树架构，减少了二进制产品的延迟，总面积只有小的增加。提出了区域和延迟估计，表明所提出的设计对于单独的二进制和十进制乘法器具有显着的面积改进，同时对于十进制和二进制运算仍然保持类似的延迟。

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