func signal_recv() string

func init() {
	watchSignalLoop = loop
}

func loop() {
	for {
		process(syscall.Note(signal_recv()))
	}
}

const numSig = 256

func signum(sig os.Signal) int {
	switch sig := sig.(type) {
	case syscall.Note:
		n, ok := sigtab[sig]
		if !ok {
			n = len(sigtab) + 1
			if n > numSig {
				return -1
			}
			sigtab[sig] = n
		}
		return n

func intFromArg(a []any, argNum int) (num int, isInt bool, newArgNum int) {
	newArgNum = argNum
	if argNum < len(a) {
		num, isInt = a[argNum].(int) // Almost always OK.
		if !isInt {
			// Work harder.
			switch v := reflect.ValueOf(a[argNum]); v.Kind() {
			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
				n := v.Int()

        'root/some' | '/root/other' | 4
    }

    def "can compare by first segment"() {
        expect:
        Integer.signum(VfsRelativePath.of(path1, offset).compareToFirstSegment(path2, caseSensitivity)) == result
        if (result) {
            assert Integer.signum(path1.substring(offset) <=> path2) == result
        }

        where:
        path1                   | offset | path2              | result

  // CHECK: %[[dq2:.*]] = "quantfork.dcast"(%[[q2]])
  // CHECK: stablehlo.convert %[[dq2]]
  %0 = "quantfork.stats"(%arg0) {bitsNum = 8 : i64, layerStats = dense<[-0.999415695, 0.99998933]> : tensor<2xf32>, narrowRange = false} : (tensor<2x3xf32>) -> tensor<2x3xf32>
  %1 = "quantfork.stats"(%0) {bitsNum = 8 : i64, layerStats = dense<[-2.0, 2.0]> : tensor<2xf32>, narrowRange = false} : (tensor<2x3xf32>) -> tensor<2x3xf32>

    int exponent = absX.bitLength() - 1;
    // exponent == floor(log2(abs(x)))
    if (exponent < Long.SIZE - 1) {
      return x.longValue();
    } else if (exponent > MAX_EXPONENT) {
      return x.signum() * POSITIVE_INFINITY;
    }

    /*
     * We need the top SIGNIFICAND_BITS + 1 bits, including the "implicit" one bit. To make rounding

        def hashA = HashCode.fromString(a)
        def hashB = HashCode.fromString(b)
        def compareAB = hashA <=> hashB
        def compareBA = hashB <=> hashA

        expect:
        Math.signum(compareAB) == expected
        Math.signum(compareBA) == -expected

        where:
        a                                    | b                                    | expected

	argNum := state.argNums[formatArg]
	if argNum <= 0 {
		// Shouldn't happen, so catch it with prejudice.
		panic("negative arg num")
	}
	if argNum < len(call.Args)-1 {
		return true // Always OK.
	}
	if call.Ellipsis.IsValid() {
		return false // We just can't tell; there could be many more arguments.
	}
	if argNum < len(call.Args) {
		return true
	}

	SYS_THRKILL        = 119 // { int sys_thrkill(pid_t tid, int signum, void *tcb); }
	SYS_READV          = 120 // { ssize_t sys_readv(int fd, \
	SYS_WRITEV         = 121 // { ssize_t sys_writev(int fd, \
	SYS_KILL           = 122 // { int sys_kill(int pid, int signum); }
	SYS_FCHOWN         = 123 // { int sys_fchown(int fd, uid_t uid, gid_t gid); }

     * deal with the cases where rounding towards 0 is wrong, which typically depends on the sign of
     * p / q.
     *
     * signum is 1 if p and q are both nonnegative or both negative, and -1 otherwise.
     */
    int signum = 1 | ((p ^ q) >> (Integer.SIZE - 1));
    boolean increment;
    switch (mode) {
      case UNNECESSARY:
        checkRoundingUnnecessary(rem == 0);

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