}
	return c, nil
}

// The constant first 4 words of the ChaCha20 state.
const (
	j0 uint32 = 0x61707865 // expa
	j1 uint32 = 0x3320646e // nd 3
	j2 uint32 = 0x79622d32 // 2-by
	j3 uint32 = 0x6b206574 // te k
)

const blockSize = 64

// quarterRound is the core of ChaCha20. It shuffles the bits of 4 state words.
// It's executed 4 times for each of the 20 ChaCha20 rounds, operating on all 16

	FCMPU   F1, F0
	BGT             sinhIsInf

	MOVD    $sinhrodataL21<>+0(SB), R5
	LTDBR	F0, F0
	MOVD    sinhxinit<>+0(SB), R1
	FMOVD   F0, F4
	MOVD    R1, R3
	BLTU    L19
	FMOVD   F0, F2
L2:
	WORD    $0xED205010     //cdb %f2,.L22-.L21(%r5)
	BYTE    $0x00
	BYTE    $0x19
	BGE     L15     //jnl   .L15
	BVS     L15
	WFCEDBS V2, V2, V0
	BEQ     L20
L12:
	FMOVD   F4, F0
	FMOVD   F0, ret+8(FP)
	RET

I think `Union[SomeType, None]` is more explicit about what it means.

It's just about the words and names. But those words can affect how you and your teammates think about the code.

// parseWord skips any leading spaces or comments in data
// and then parses the beginning of data as an identifier or keyword,
// returning that word and what remains after the word.
func parseWord(data []byte) (word, rest []byte) {
	data = skipSpaceOrComment(data)

	// Parse past leading word characters.
	rest = data
	for {
		r, size := utf8.DecodeRune(rest)
		if unicode.IsLetter(r) || '0' <= r && r <= '9' || r == '_' {

	xs, xe, xm := split(bx)
	ys, ye, ym := split(by)
	zs, ze, zm := split(bz)

	// Compute product p = x*y as sign, exponent, two-word mantissa.
	// Start with exponent. "is normal" bit isn't subtracted yet.
	pe := xe + ye - bias + 1

	// pm1:pm2 is the double-word mantissa for the product p.
	// Shift left to leave top bit in product. Effectively
	// shifts the 106-bit product to the left by 21.

#include "funcdata.h"

// The frames of each of the two functions below contain two locals, at offsets
// that are known to the runtime.
//
// The first local is a bool called retValid with a whole pointer-word reserved
// for it on the stack. The purpose of this word is so that the runtime knows
// whether the stack-allocated return space contains valid values for stack
// scanning.
//
// The second local is an abi.RegArgs value whose offset is also known to the

        -1)

  @def_function.function(
      input_signature=[tensor_spec.TensorSpec(shape=None, dtype=dtypes.string)])
  def lookup(self, word):
    return self.table.lookup(word)


def get_simple_session():
  ops.disable_eager_execution()
  sess = session_lib.Session()
  variables.Variable(1.)
  sess.run(variables.global_variables_initializer())
  return sess

//
// On ARM, 386, and 32-bit MIPS, it is the caller's responsibility to arrange
// for 64-bit alignment of 64-bit words accessed atomically via the primitive
// atomic functions (types [Int64] and [Uint64] are automatically aligned).
// The first word in an allocated struct, array, or slice; in a global
// variable; or in a local variable (because the subject of all atomic operations

 * limitations under the License.
 */

package org.gradle.api.problems


import spock.lang.Specification

class SeverityTest extends Specification{
    def "severity toString() should be a capitalized word"() {
        expect:
        Severity.ERROR.toString() == "Error"
        Severity.WARNING.toString() == "Warning"
    }

	}
	return unsafe.Slice((*uint)(&x[0]), len(x))
}

func Dec(b boring.BigInt) *big.Int {
	if b == nil {
		return nil
	}
	if len(b) == 0 {
		return new(big.Int)
	}
	x := unsafe.Slice((*big.Word)(&b[0]), len(b))
	return new(big.Int).SetBits(x)