// 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)

package sqlite3

import (
	"unsafe"

	"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
}

// C documentation
//
//	/*
//	** Parse times of the form HH:MM or HH:MM:SS or HH:MM:SS.FFFF.
//	** The HH, MM, and SS must each be exactly 2 digits.  The
//	** fractional seconds FFFF can be one or more digits.
//	**
//	** Return 1 if there is a parsing error and 0 on success.
//	*/
func _parseHhMmSs(tls *libc.TLS, zDate uintptr, p uintptr) (r int32) {
	bp := tls.Alloc(48)
	defer tls.Free(48)
	var ms, rScale float64
	var _ /* h at bp+0 */ int32
	var _ /* m at bp+4 */ int32
	var _ /* s at bp+8 */ int32
	_, _ = ms, rScale
	ms = float64(0)
	if _getDigits(tls, zDate, __ccgo_ts+1202, libc.VaList(bp+24, bp, bp+4)) != int32(2) {
		return int32(1)
	}
	zDate = zDate + uintptr(5)
	if int32(**(**int8)(__ccgo_up(zDate))) == int32(':') {
		zDate = zDate + 1
		if _getDigits(tls, zDate, __ccgo_ts+1210, libc.VaList(bp+24, bp+8)) != int32(1) {
			return int32(1)
		}
		zDate = zDate + uintptr(2)
		if int32(**(**int8)(__ccgo_up(zDate))) == int32('.') && libc.Int32FromUint8(_sqlite3CtypeMap[libc.Uint8FromInt8(**(**int8)(__ccgo_up(zDate + 1)))])&int32(0x04) != 0 {
			rScale = float64(1)
			zDate = zDate + 1
			for libc.Int32FromUint8(_sqlite3CtypeMap[libc.Uint8FromInt8(**(**int8)(__ccgo_up(zDate)))])&int32(0x04) != 0 {
				ms = float64(ms*float64(10)) + float64(**(**int8)(__ccgo_up(zDate))) - libc.Float64FromUint8('0')
				rScale = rScale * float64(10)
				zDate = zDate + 1
			}
			ms = ms / rScale
			/* Truncate to avoid problems with sub-milliseconds
			 ** rounding. https://sqlite.org/forum/forumpost/766a2c9231 */
			if ms > float64(0.999) {
				ms = float64(0.999)
			}
		}
	} else {
		**(**int32)(__ccgo_up(bp + 8)) = 0
	}
	(*TDateTime)(unsafe.Pointer(p)).FvalidJD = 0
	libc.SetBitFieldPtr8Uint32(p+44, libc.Uint32FromInt32(0), 0, 0x1)
	(*TDateTime)(unsafe.Pointer(p)).FvalidHMS = int8(1)
	(*TDateTime)(unsafe.Pointer(p)).Fh = **(**int32)(__ccgo_up(bp))
	(*TDateTime)(unsafe.Pointer(p)).Fm = **(**int32)(__ccgo_up(bp + 4))
	(*TDateTime)(unsafe.Pointer(p)).Fs = float64(**(**int32)(__ccgo_up(bp + 8))) + ms
	if _parseTimezone(tls, zDate, p) != 0 {
		return int32(1)
	}
	return 0
}

// C documentation
//
//	/*
//	** Parse a timezone extension on the end of a date-time.
//	** The extension is of the form:
//	**
//	**        (+/-)HH:MM
//	**
//	** Or the "zulu" notation:
//	**
//	**        Z
//	**
//	** If the parse is successful, write the number of minutes
//	** of change in p->tz and return 0.  If a parser error occurs,
//	** return non-zero.
//	**
//	** A missing specifier is not considered an error.
//	*/
func _parseTimezone(tls *libc.TLS, zDate uintptr, p uintptr) (r int32) {
	bp := tls.Alloc(32)
	defer tls.Free(32)
	var c, sgn int32
	var _ /* nHr at bp+0 */ int32
	var _ /* nMn at bp+4 */ int32
	_, _ = c, sgn
	sgn = 0
	for libc.Int32FromUint8(_sqlite3CtypeMap[libc.Uint8FromInt8(**(**int8)(__ccgo_up(zDate)))])&int32(0x01) != 0 {
		zDate = zDate + 1
	}
	(*TDateTime)(unsafe.Pointer(p)).Ftz = 0
	c = int32(**(**int8)(__ccgo_up(zDate)))
	if c == int32('-') {
		sgn = -int32(1)
	} else {
		if c == int32('+') {
			sgn = +libc.Int32FromInt32(1)
		} else {
			if c == int32('Z') || c == int32('z') {
				zDate = zDate + 1
				libc.SetBitFieldPtr8Uint32(p+44, libc.Uint32FromInt32(0), 4, 0x10)
				libc.SetBitFieldPtr8Uint32(p+44, libc.Uint32FromInt32(1), 3, 0x8)
				goto zulu_time
			} else {
				return libc.BoolInt32(c != 0)
			}
		}
	}
	zDate = zDate + 1
	if _getDigits(tls, zDate, __ccgo_ts+1194, libc.VaList(bp+16, bp, bp+4)) != int32(2) {
		return int32(1)
	}
	zDate = zDate + uintptr(5)
	(*TDateTime)(unsafe.Pointer(p)).Ftz = sgn * (**(**int32)(__ccgo_up(bp + 4)) + **(**int32)(__ccgo_up(bp))*int32(60))
	if (*TDateTime)(unsafe.Pointer(p)).Ftz == 0 { /* Forum post 2025-09-17T10:12:14z */
		libc.SetBitFieldPtr8Uint32(p+44, libc.Uint32FromInt32(0), 4, 0x10)
		libc.SetBitFieldPtr8Uint32(p+44, libc.Uint32FromInt32(1), 3, 0x8)
	}
	goto zulu_time
zulu_time:
	;
	for libc.Int32FromUint8(_sqlite3CtypeMap[libc.Uint8FromInt8(**(**int8)(__ccgo_up(zDate)))])&int32(0x01) != 0 {
		zDate = zDate + 1
	}
	return libc.BoolInt32(int32(**(**int8)(__ccgo_up(zDate))) != 0)
}

// C documentation
//
//	/*
//	** Parse dates of the form
//	**
//	**     YYYY-MM-DD HH:MM:SS.FFF
//	**     YYYY-MM-DD HH:MM:SS
//	**     YYYY-MM-DD HH:MM
//	**     YYYY-MM-DD
//	**
//	** Write the result into the DateTime structure and return 0
//	** on success and 1 if the input string is not a well-formed
//	** date.
//	*/
func _parseYyyyMmDd(tls *libc.TLS, zDate uintptr, p uintptr) (r int32) {
	bp := tls.Alloc(48)
	defer tls.Free(48)
	var neg, v1 int32
	var _ /* D at bp+8 */ int32
	var _ /* M at bp+4 */ int32
	var _ /* Y at bp+0 */ int32
	_, _ = neg, v1
	if int32(**(**int8)(__ccgo_up(zDate))) == int32('-') {
		zDate = zDate + 1
		neg = int32(1)
	} else {
		neg = 0
	}
	if _getDigits(tls, zDate, __ccgo_ts+1214, libc.VaList(bp+24, bp, bp+4, bp+8)) != int32(3) {
		return int32(1)
	}
	zDate = zDate + uintptr(10)
	for libc.Int32FromUint8(_sqlite3CtypeMap[libc.Uint8FromInt8(**(**int8)(__ccgo_up(zDate)))])&int32(0x01) != 0 || int32('T') == libc.Int32FromUint8(**(**Tu8)(__ccgo_up(zDate))) {
		zDate = zDate + 1
	}
	if _parseHhMmSs(tls, zDate, p) == 0 {
		/* We got the time */
	} else {
		if int32(**(**int8)(__ccgo_up(zDate))) == 0 {
			(*TDateTime)(unsafe.Pointer(p)).FvalidHMS = 0
		} else {
			return int32(1)
		}
	}
	(*TDateTime)(unsafe.Pointer(p)).FvalidJD = 0
	(*TDateTime)(unsafe.Pointer(p)).FvalidYMD = int8(1)
	if neg != 0 {
		v1 = -**(**int32)(__ccgo_up(bp))
	} else {
		v1 = **(**int32)(__ccgo_up(bp))
	}
	(*TDateTime)(unsafe.Pointer(p)).FY = v1
	(*TDateTime)(unsafe.Pointer(p)).FM = **(**int32)(__ccgo_up(bp + 4))
	(*TDateTime)(unsafe.Pointer(p)).FD = **(**int32)(__ccgo_up(bp + 8))
	_computeFloor(tls, p)
	if (*TDateTime)(unsafe.Pointer(p)).Ftz != 0 {
		_computeJD(tls, p)
	}
	return 0
}

/* Forward declaration */