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Performs element-wise subtraction on the source operands src0, src1, and the carry data carry_src according to the mask, and writes the result to the destination operand dst. When a borrow occurs during the subtraction of src0, src1, and carry_src, the lowest bit of each 4-bit group at the corresponding position in carry is set to 0; otherwise, it is set to 1.

The calculation formula is as follows:

$$dst_i = src0_i - src1_i - carrysrc_i$$

Example explanation of carry output borrow values:

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For details about vector data registers and mask registers, see .

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