Vector string search instruction
    1.
    发明专利

    公开(公告)号:IL284709D0

    公开(公告)日:2021-08-31

    申请号:IL28470921

    申请日:2021-07-08

    Abstract: An instruction is provided for performing a vector string search. The instruction to be processed is obtained, with the instruction being defined to be a string search instruction to locate occurrence of a substring within a string. The instruction is processed, with the processing including searching the string specified in one operand of the instruction using the substring specified in another operand of the instruction. Based on the searching locating a first full match of the substring within the string, a full match condition indication is returned with position of the first full match in the string, and based on the searching locating only a partial match of the substring at a termination of the string, a partial match condition indication is returned, with the position of the partial match in the string.

    Rounding hexadecimal floating point numbers using binary incrementors

    公开(公告)号:GB2630547B

    公开(公告)日:2025-04-09

    申请号:GB202412923

    申请日:2023-03-21

    Applicant: IBM

    Abstract: Rounding hexadecimal floating point numbers using binary incrementors, including: incrementing, by a first incrementor, a first subset of bits of an operand comprising a binary hexadecimal floating point operand; incrementing, by a second incrementor, a second subset of bits of the operand; generate an intermediate result based on a carryout of the second incrementor; and generate an incremented result based on a carryout of the first incrementor and one or more of: a first bit of the intermediate result or the carryout of the second incrementor.

    Rounding hexadecimal floating point numbers using binary incrementors

    公开(公告)号:GB2630547A

    公开(公告)日:2024-11-27

    申请号:GB202412923

    申请日:2023-03-21

    Applicant: IBM

    Abstract: Rounding hexadecimal floating point numbers using binary incrementors, including: incrementing, by a first incrementor, a first subset of bits of an operand comprising a binary hexadecimal floating point operand; incrementing, by a second incrementor, a second subset of bits of the operand; generate an intermediate result based on a carryout of the second incrementor; and generate an incremented result based on a carryout of the first incrementor and one or more of: a first bit of the intermediate result or the carryout of the second incrementor.

    Plausability-driven fault detection in result logic and condition codes for fast exact substring match

    公开(公告)号:GB2602405A

    公开(公告)日:2022-06-29

    申请号:GB202203285

    申请日:2020-08-07

    Applicant: IBM

    Abstract: A method for detecting faults in substring search operations includes providing, using a processor unit including vector registers of M vector elements each, anMxM Matrix of comparators for characterwise comparison of the elements of a reference string stored in a first one of the vector registers and a target string stored in a second one of the vector registers. A vector element is an n-bit element for encoding a character.A resulting bit vector is generated using comparison performed by the MxM matrix. The resulting bit vector indicates characters of the target string that fully match the reference string and indicates characters of the target string that partially match the reference string. Fault detection in the substring search operations is performed by utilizing the resulting bit vector.

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