VSUBVX		X10, V2, V1, V3			// ERROR "invalid vector mask register"
	VRSUBVX		X10, V2, V1, V3			// ERROR "invalid vector mask register"
	VRSUBVI		$15, V4, V1, V2			// ERROR "invalid vector mask register"
	VNEGV		V2, V3, V4			// ERROR "invalid vector mask register"
	VWADDUVV	V1, V2, V4, V3			// ERROR "invalid vector mask register"
	VWADDUVX	X10, V2, V4, V3			// ERROR "invalid vector mask register"

         <match value="0x00" type="string" mask="0xF8" offset="5"/>
         <match value="0x08" type="string" mask="0xF8" offset="5"/>
         <match value="0x10" type="string" mask="0xF8" offset="5"/>
         <match value="0x18" type="string" mask="0xF8" offset="5"/>
         <match value="0x20" type="string" mask="0xF8" offset="5"/>
         <match value="0x28" type="string" mask="0xF8" offset="5"/>

func discard(r io.Reader, n int64) error {
	// If possible, Seek to the last byte before the end of the data section.
	// Do this because Seek is often lazy about reporting errors; this will mask
	// the fact that the stream may be truncated. We can rely on the
	// io.CopyN done shortly afterwards to trigger any IO errors.
	var seekSkipped int64 // Number of bytes skipped via Seek

func gcmCounterCryptGener(b *aes.Block, out, src []byte, counter *[gcmBlockSize]byte) { var mask [gcmBlockSize]byte for len(src) >= gcmBlockSize { aes.EncryptBlockInternal(b, mask[:], counter[:]) gcmInc32(counter) subtle.XORBytes(out, src, mask[:]) out = out[gcmBlockSize:] src = src[gcmBlockSize:] } if len(src) > 0 { aes.EncryptBlockInternal(b, mask[:], counter[:]) gcmInc32(counter) subtle.XORBytes(out, src, mask[:]) } } // gcmInc32 treats the final four bytes of counterBlock as a big-endian value //...

	if len(b) > 0 && b[0]&0x80 != 0 {
		// Handling negative numbers relies on the following identity:
		//	-a-1 == ^a
		//
		// If the number is negative, we use an inversion mask to invert the
		// data bytes and treat the value as an unsigned number.
		var inv byte // 0x00 if positive or zero, 0xff if negative
		if b[0]&0x40 != 0 {
			inv = 0xff
		}

		var x uint64

	VFWREDOSUMVS	V1, V2, V3			// d79120ce
	VFWREDOSUMVS	V1, V2, V0, V3			// d79120cc
	VFWREDUSUMVS	V1, V2, V3			// d79120c6
	VFWREDUSUMVS	V1, V2, V0, V3			// d79120c4

	// 31.15: Vector Mask Instructions
	VMANDMM		V1, V2, V3			// d7a12066
	VMNANDMM	V1, V2, V3			// d7a12076
	VMANDNMM	V1, V2, V3			// d7a12062
	VMXORMM		V1, V2, V3			// d7a1206e
	VMORMM		V1, V2, V3			// d7a1206a

 * If you use masked losses with Keras the loss values may be different in TensorFlow `2.12` compared to previous versions.
 * In cases where the mask was previously ignored, you will now get an error if you pass a mask with an incompatible shape.

### Major Features and Improvements

`tf.keras`:

</p>

<pre>
const (
	bit0, mask0 = 1 &lt;&lt; iota, 1&lt;&lt;iota - 1  // bit0 == 1, mask0 == 0  (iota == 0)
	bit1, mask1                           // bit1 == 2, mask1 == 1  (iota == 1)
	_, _                                  //                        (iota == 2, unused)
	bit3, mask3                           // bit3 == 8, mask3 == 7  (iota == 3)
)
</pre>

<p>

     * @param readlimit the maximum limit of bytes that can be read before the mark position becomes invalid
     */
    @Override
    public synchronized void mark(final int readlimit) {
        inputStream.mark(readlimit);
    }

    /**
     * Tests if this input stream supports the mark and reset methods.
     *
     * @return true if this stream instance supports the mark and reset methods; false otherwise
     */
    @Override

	}
	return riscv.SPOP_END
}

// RISCV64ValidateVectorType reports whether the given configuration is a
// valid vector type.
func RISCV64ValidateVectorType(vsew, vlmul, vtail, vmask int64) error {
	_, err := riscv.EncodeVectorType(vsew, vlmul, vtail, vmask)
	return err