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Converts the bfloat16_t type data to int32_t, and supports multiple rounding modes.

  • RINT rounding mode: round half to even
  • ROUND rounding mode: round half up
  • FLOOR rounding mode: round toward negative infinity
  • CEIL rounding mode: round toward positive infinity
  • TRUNC rounding mode: round toward zero

Based on the magnitude of the input data, the operation is divided into non-saturation mode and saturation mode.

  • Non-saturation mode:
    • When the input data exceeds the maximum or minimum value of the output type, the result is truncated to the data width of the target format.
    • When the input data is +/-inf, the maximum or minimum value of the output type is returned.
    • When the input data is nan, 0 is returned.
  • Saturation mode:
    • When the input data exceeds the maximum or minimum value of the output type, the corresponding maximum or minimum value of the output type is returned.
    • When the input data is +/-inf, the maximum or minimum value of the output type is returned.
    • When the input data is nan, 0 is returned.

Since the bit-width ratio of the source operand type to the destination operand type is 1:2, when reading data, the data of one VL size needs to be divided into two parts, and index 0 or index 1 is selected according to different interfaces.

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For detailed descriptions of vector data registers and mask registers, see .

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PIPE_V

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  • To enable the saturation mode and non-saturation mode, the ctrl register must be configured. For detailed descriptions of the ctrl register, see .
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