// Code generated by modernc.org/undup from the per-target sqlite_*.go files; DO NOT EDIT.

//go:build (darwin && amd64) || (darwin && arm64) || (freebsd && 386) || (freebsd && amd64) || (windows && (amd64 || arm64)) || (windows && 386)

package sqlite3

import (
	"modernc.org/libc"
)

// C documentation
//
//	/*
//	** Compare the 19-character string zNum against the text representation
//	** value 2^63:  9223372036854775808.  Return negative, zero, or positive
//	** if zNum is less than, equal to, or greater than the string.
//	** Note that zNum must contain exactly 19 characters.
//	**
//	** Unlike memcmp() this routine is guaranteed to return the difference
//	** in the values of the last digit if the only difference is in the
//	** last digit.  So, for example,
//	**
//	**      compare2pow63("9223372036854775800", 1)
//	**
//	** will return -8.
//	*/
func _compare2pow63(tls *libc.TLS, zNum uintptr, incr int32) (r int32) {
	var c, i int32
	var pow63 uintptr
	_, _, _ = c, i, pow63
	c = 0
	/* 012345678901234567 */
	pow63 = __ccgo_ts + 1813
	i = 0
	for {
		if !(c == 0 && i < int32(18)) {
			break
		}
		c = (int32(**(**int8)(__ccgo_up(zNum + uintptr(i*incr)))) - int32(**(**int8)(__ccgo_up(pow63 + uintptr(i))))) * int32(10)
		goto _1
	_1:
		;
		i = i + 1
	}
	if c == 0 {
		c = int32(**(**int8)(__ccgo_up(zNum + uintptr(int32(18)*incr)))) - int32('8')
	}
	return c
}