An error on not-num-const:1 indicates that foo is not a number constant.
An error on not-str-lit:1 indicates that foo is not a string literal.
An error on not-signed-int-const:1 indicates that foo is not a signed integer constant.

The line number specifies the name involved. In the example, 1 is foo.

Next, cgo must learn the details of each type, variable, function, or

uint64      the set of all unsigned 64-bit integers (0 to 18446744073709551615)

int8        the set of all signed  8-bit integers (-128 to 127)
int16       the set of all signed 16-bit integers (-32768 to 32767)
int32       the set of all signed 32-bit integers (-2147483648 to 2147483647)
int64       the set of all signed 64-bit integers (-9223372036854775808 to 9223372036854775807)

// signed byte values.
// We compute and return both.
func (b *block) computeChecksum() (unsigned, signed int64) {
	for i, c := range b {
		if 148 <= i && i < 156 {
			c = ' ' // Treat the checksum field itself as all spaces.
		}
		unsigned += int64(c)
		signed += int64(int8(c))
	}
	return unsigned, signed
}

// reset clears the block with all zeros.

			t.Align = c.ptrSize
		}
		t.C.Set("enum " + dt.EnumName)
		signed := 0
		t.EnumValues = make(map[string]int64)
		for _, ev := range dt.Val {
			t.EnumValues[ev.Name] = ev.Val
			if ev.Val < 0 {
				signed = signedDelta
			}
		}
		switch t.Size + int64(signed) {
		default:
			fatalf("%s: unexpected: %d-byte enum type - %s", lineno(pos), t.Size, dtype)
		case 1:

	instructions["JGE"] = x86.AJGE  /* greater than or equal (signed) (SF = OF) */
	instructions["JGT"] = x86.AJGT  /* greater than (signed) (ZF = 0 && SF = OF) */
	instructions["JHI"] = x86.AJHI  /* higher (unsigned) (CF = 0 && ZF = 0) */
	instructions["JHS"] = x86.AJCC  /* alternate */
	instructions["JL"] = x86.AJLT   /* alternate */
	instructions["JLE"] = x86.AJLE  /* less than or equal (signed) (ZF = 1 || SF != OF) */

pkg syscall (freebsd-arm64-cgo), const SYS_MKNODAT = 559 #53280
pkg syscall (freebsd-arm64-cgo), const SYS_STATFS = 555 #53280
pkg syscall (linux-386-cgo), const CLONE_CLEAR_SIGHAND = 4294967296 #51246
pkg syscall (linux-386-cgo), const CLONE_CLEAR_SIGHAND ideal-int #51246
pkg syscall (linux-386-cgo), const CLONE_INTO_CGROUP = 8589934592 #51246
pkg syscall (linux-386-cgo), const CLONE_INTO_CGROUP ideal-int #51246

type uint64 uint64

// int8 is the set of all signed 8-bit integers.
// Range: -128 through 127.
type int8 int8

// int16 is the set of all signed 16-bit integers.
// Range: -32768 through 32767.
type int16 int16

// int32 is the set of all signed 32-bit integers.
// Range: -2147483648 through 2147483647.
type int32 int32

// int64 is the set of all signed 64-bit integers.

uint64      the set of all unsigned 64-bit integers (0 to 18446744073709551615)

int8        the set of all signed  8-bit integers (-128 to 127)
int16       the set of all signed 16-bit integers (-32768 to 32767)
int32       the set of all signed 32-bit integers (-2147483648 to 2147483647)
int64       the set of all signed 64-bit integers (-9223372036854775808 to 9223372036854775807)

	mpz_div_2exp(a, b, n);
}
*/
import "C"

import (
	"os"
	"unsafe"
)

/*
 * one of a kind
 */

// An Int represents a signed multi-precision integer.
// The zero value for an Int represents the value 0.
type Int struct {
	i    C.mpz_t
	init bool
}

// NewInt returns a new Int initialized to x.