PERFORM SIGN OPERATION DECIMAL INSTRUCTION

    公开(公告)号:ZA201902529B

    公开(公告)日:2022-04-28

    申请号:ZA201902529

    申请日:2019-04-23

    Applicant: IBM

    Abstract: An instruction to perform a sign operation of a plurality of sign operations configured for the instruction. The instruction is executed, and the executing includes selecting at least a portion of an input operand as a result to be placed in a select location. The selecting is based on a control of the instruction, in which the control indicates a user-defined size of the input operand to be selected as the result. A sign of the result is determined based on a plurality of criteria, including a value of the result, obtained based on the control of the instruction, having a first particular relationship or a second particular relationship with respect to a selected value. The result and the sign are stored in the select location to provide a signed output to be used in processing within the computing environment.

    Perform sign operation decimal instruction

    公开(公告)号:AU2017333837A1

    公开(公告)日:2019-04-04

    申请号:AU2017333837

    申请日:2017-09-22

    Applicant: IBM

    Abstract: An instruction to perform a sign operation of a plurality of sign operations configured for the instruction. The instruction is executed, and the executing includes selecting at least a portion of an input operand as a result to be placed in a select location. The selecting is based on a control of the instruction, in which the control indicates a user-defined size of the input operand to be selected as the result. A sign of the result is determined based on a plurality of criteria, including a value of the result, obtained based on the control of the instruction, having a first particular relationship or a second particular relationship with respect to a selected value. The result and the sign are stored in the select location to provide a signed output to be used in processing within the computing environment.

    PERFORM SIGN OPERATION DECIMAL INSTRUCTION

    公开(公告)号:CA3036125A1

    公开(公告)日:2018-04-05

    申请号:CA3036125

    申请日:2017-09-22

    Applicant: IBM

    Abstract: An instruction to perform a sign operation of a plurality of sign operations configured for the instruction. The instruction is executed, and the executing includes selecting at least a portion of an input operand as a result to be placed in a select location. The selecting is based on a control of the instruction, in which the control indicates a user-defined size of the input operand to be selected as the result. A sign of the result is determined based on a plurality of criteria, including a value of the result, obtained based on the control of the instruction, having a first particular relationship or a second particular relationship with respect to a selected value. The result and the sign are stored in the select location to provide a signed output to be used in processing within the computing environment.

    DECIMAL SHIFT AND DIVIDE INSTRUCTION

    公开(公告)号:CA3036122A1

    公开(公告)日:2018-04-05

    申请号:CA3036122

    申请日:2017-09-21

    Applicant: IBM

    Abstract: An instruction to perform a shift and divide operation is executed. The executing includes shifting a value in a specified direction by a selected amount to provide a dividend, the selected amount being user-defined. The dividend is divided by a divisor to obtain a quotient. At least a subset of the quotient is selected as a result. The result is to be used in processing within the computing environment.

    DECIMAL FLOATING-POINT QUANTUM EXCEPTION DETECTION

    公开(公告)号:SG193162A1

    公开(公告)日:2013-09-30

    申请号:SG2013057922

    申请日:2010-11-08

    Applicant: IBM

    Abstract: 23 DECIMAL FLOATING-POINT QUANTUM EXCEPTION DETECTION AbstractA system and method for detecting decimal floating point data processing exceptions. A processor accepts at least one decimal floating point operand and performs a decimal floating point operation on the at least one decimal floating point operand to produce a decimal floating point result. A determination is made as to whether the decimal floating point result fails to maintain a preferred quantum. The10 preferred quantum indicates a value represented by a least significant digit of a significand of the decimal floating point result. An output is provided, in response to the determining that the decimal floating point result fails to maintain the preferred quantum, indicating an occurrence of a quantum exception. A maskable exception can be generated that is immediately trapped or later detected to control conditional15 processing. Fig. 1

    DECIMAL FLOATING-POINT QUANTUM EXCEPTION DETECTION

    公开(公告)号:CA2800643A1

    公开(公告)日:2011-12-01

    申请号:CA2800643

    申请日:2010-11-08

    Applicant: IBM

    Abstract: A system and method for detecting decimal floating point data processing exceptions. A processor accepts at least one decimal floating point operand and performs a decimal floating point operation on the at least one decimal floating point operand to produce a decimal floating point result. A determination is made as to whether the decimal floating point result fails to maintain a preferred quantum. The preferred quantum indicates a value represented by a least significant digit of a significand of the decimal floating point result. An output is provided, in response to the determining that the decimal floating point result fails to maintain the preferred quantum, indicating an occurrence of a quantum exception. A maskable exception can be generated that is immediately trapped or later detected to control conditional processing.

    FLOATING POINT VECTOR COMPARISON INSTRUCTION WITH SELECTABLE OPTIONS

    公开(公告)号:ZA201903112B

    公开(公告)日:2021-04-28

    申请号:ZA201903112

    申请日:2019-05-17

    Applicant: IBM

    Abstract: An instruction to perform a comparison of a first value and a second value is executed. Based on a control of the instruction, a compare function to be performed is determined. The compare function is one of a plurality of compare functions configured for the instruction, and the compare function has a plurality of options for comparison. A compare option based on the first value and the second value is selected from the plurality of options defined for the compare function, and used to compare the first value and the second value. A result of the comparison is then placed in a select location, the result to be used in processing within a computing environment.

    DECIMAL SHIFT AND DIVIDE INSTRUCTION

    公开(公告)号:ZA201902291B

    公开(公告)日:2021-04-28

    申请号:ZA201902291

    申请日:2019-04-11

    Applicant: IBM

    Abstract: An instruction to perform a shift and divide operation is executed. The executing includes shifting a value in a specified direction by a selected amount to provide a dividend, the selected amount being user-defined. The dividend is divided by a divisor to obtain a quotient. At least a subset of the quotient is selected as a result. The result is to be used in processing within the computing environment.

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