// octals
		{IntLit, "0o0", "0o0", ""},
		{IntLit, "0o1234", "0o1234", ""},
		{IntLit, "0O1234", "0O1234", ""},

		{IntLit, "0o", "0o", "octal literal has no digits"},
		{IntLit, "0o8123", "0o8123", "invalid digit '8' in octal literal"},
		{IntLit, "0o1293", "0o1293", "invalid digit '9' in octal literal"},
		{IntLit, "0o12a3", "0o12 a3", ""}, // only accept 0-9

		{Float, "0b1P-1", "0b1P-1", "'P' exponent requires hexadecimal mantissa"},

		// octals
		{Int, "0o0", "0o0", ""},
		{Int, "0o1234", "0o1234", ""},
		{Int, "0O1234", "0O1234", ""},

		{Int, "0o", "0o", "octal literal has no digits"},
		{Int, "0o8123", "0o8123", "invalid digit '8' in octal literal"},
		{Int, "0o1293", "0o1293", "invalid digit '9' in octal literal"},
		{Int, "0o12a3", "0o12 a3", ""}, // only accept 0-9

		// octals
		{token.INT, "0o0", "0o0", ""},
		{token.INT, "0o1234", "0o1234", ""},
		{token.INT, "0O1234", "0O1234", ""},

		{token.INT, "0o", "0o", "octal literal has no digits"},
		{token.INT, "0o8123", "0o8123", "invalid digit '8' in octal literal"},
		{token.INT, "0o1293", "0o1293", "invalid digit '9' in octal literal"},
		{token.INT, "0o12a3", "0o12 a3", ""}, // only accept 0-9

// or “0x” (or their upper-case variants) to denote a binary, octal, or
// hexadecimal integer, respectively. The divisor may not be signed.
// If a floating-point number is provided, it may be in decimal form or
// use any of the same prefixes as above but for “0” to denote a non-decimal
// mantissa. A leading “0” is considered a decimal leading 0; it does not
// indicate octal representation in this case.

			s.nextch()
		}
	}
	return
}

func (s *scanner) number(seenPoint bool) {
	ok := true
	kind := IntLit
	base := 10        // number base
	prefix := rune(0) // one of 0 (decimal), '0' (0-octal), 'x', 'o', or 'b'
	digsep := 0       // bit 0: digit present, bit 1: '_' present
	invalid := -1     // index of invalid digit in literal, or < 0

	// integer part
	if !seenPoint {
		if s.ch == '0' {

	"go/token"
	"math"
	"math/big"
	"strings"
	"testing"
)

var intTests = []string{
	// 0-octals
	`0_123 = 0123`,
	`0123_456 = 0123456`,

	// decimals
	`1_234 = 1234`,
	`1_234_567 = 1234567`,

	// hexadecimals
	`0X_0 = 0`,
	`0X_1234 = 0x1234`,
	`0X_CAFE_f00d = 0xcafef00d`,

	// octals
	`0o0 = 0`,
	`0o1234 = 01234`,
	`0o01234567 = 01234567`,

	`0O0 = 0`,
	`0O1234 = 01234`,

		{"\xff\x80\x00\x00\x00\x00\x00\x00\x00", math.MinInt64, true},
		{"\xff\x7f\xff\xff\xff\xff\xff\xff\xff", 0, false},
		{"\xf5\xec\xd1\xc7\x7e\x5f\x26\x48\x81\x9f\x8f\x9b", 0, false},

		// Test base-8 (octal) encoded values.
		{"0000000\x00", 0, true},
		{" \x0000000\x00", 0, true},
		{" \x0000003\x00", 3, true},
		{"00000000227\x00", 0227, true},
		{"032033\x00 ", 032033, true},
		{"320330\x00 ", 0320330, true},

	{"0x__12345", 0, 0, ErrSyntax},
	{"0x1__2345", 0, 0, ErrSyntax},
	{"0x1234__5", 0, 0, ErrSyntax},
	{"0x12345_", 0, 0, ErrSyntax},

	{"-0_1_2_3_4_5", 0, -012345, nil}, // octal
	{"0_1_2_3_4_5", 0, 012345, nil},   // octal
	{"-_012345", 0, 0, ErrSyntax},
	{"_-012345", 0, 0, ErrSyntax},
	{"_012345", 0, 0, ErrSyntax},
	{"0__12345", 0, 0, ErrSyntax},
	{"01234__5", 0, 0, ErrSyntax},
	{"012345_", 0, 0, ErrSyntax},

			fallthrough
		case eof, '\n':
			return l.errorf("unterminated character constant")
		case '\'':
			break Loop
		}
	}
	return l.emit(itemCharConstant)
}

// lexNumber scans a number: decimal, octal, hex, float, or imaginary. This
// isn't a perfect number scanner - for instance it accepts "." and "0x0.2"
// and "089" - but when it's wrong the input is invalid and the parser (via
// strconv) will notice.

  // dependencies.
  // We don’t mention the control token in the return type here, it is implicit.
  %0, %ctl0 = tf_executor.opA %feed#0, %feed#1 : tensor<*xf32>
  %1, %ctl1 = tf_executor.opB : tensor<*xf32>
  %2, %ctl2 = tf_executor.opC %1, %ctl0 : tensor<*xf32>
  %3, %ctl3 = tf_executor.opD %2 : tensor<*xf32>
  tf_executor.fetch %3 : tensor<*xf32>
} // end of the “tf_executor.graph" operation/region