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Converts the float type to the fp8_e4m3fn_t type, supporting the RINT rounding mode.

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 corresponding signed inf value of the output type is returned.
  • When the input data is +/-inf, +/-inf is returned.
  • When the input data is nan, nan 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 corresponding 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 4:1, when writing data, the data of one VL size needs to be divided into four parts, and index 0, index 1, index 2, or index 3 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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None

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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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