utmscale_toInt64

// icuin.dll
#include <windows.h>

LONGLONG utmscale_toInt64(
    LONGLONG universalTime,
    UDateTimeScale timeScale,
    UErrorCode* status
);

<DllImport("icuin.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function utmscale_toInt64(
    universalTime As Long,   ' LONGLONG
    timeScale As Integer,   ' UDateTimeScale
    ByRef status As Integer   ' UErrorCode* in/out
) As Long
End Function

' universalTime : LONGLONG
' timeScale : UDateTimeScale
' status : UErrorCode* in/out
Declare PtrSafe Function utmscale_toInt64 Lib "icuin" ( _
    ByVal universalTime As LongLong, _
    ByVal timeScale As Long, _
    ByRef status As Long) As LongLong
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

utmscale_toInt64 = ctypes.cdll.icuin.utmscale_toInt64
utmscale_toInt64.restype = ctypes.c_longlong
utmscale_toInt64.argtypes = [
    ctypes.c_longlong,  # universalTime : LONGLONG
    ctypes.c_int,  # timeScale : UDateTimeScale
    ctypes.c_void_p,  # status : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuin.dll')
utmscale_toInt64 = Fiddle::Function.new(
  lib['utmscale_toInt64'],
  [
    Fiddle::TYPE_LONG_LONG,  # universalTime : LONGLONG
    Fiddle::TYPE_INT,  # timeScale : UDateTimeScale
    Fiddle::TYPE_VOIDP,  # status : UErrorCode* in/out
  ],
  Fiddle::TYPE_LONG_LONG, Fiddle::Function::CDECL)

#[link(name = "icuin")]
extern "C" {
    fn utmscale_toInt64(
        universalTime: i64,  // LONGLONG
        timeScale: i32,  // UDateTimeScale
        status: *mut i32  // UErrorCode* in/out
    ) -> i64;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuin.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern long utmscale_toInt64(long universalTime, int timeScale, ref int status);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuin_utmscale_toInt64' -Namespace Win32 -PassThru
# $api::utmscale_toInt64(universalTime, timeScale, status)

#uselib "icuin.dll"
#func global utmscale_toInt64 "utmscale_toInt64" sptr, sptr, sptr
; utmscale_toInt64 universalTime, timeScale, status   ; 戻り値は stat
; universalTime : LONGLONG -> "sptr"
; timeScale : UDateTimeScale -> "sptr"
; status : UErrorCode* in/out -> "sptr"
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "icuin.dll"
#cfunc global utmscale_toInt64 "utmscale_toInt64" int64, int, int
; res = utmscale_toInt64(universalTime, timeScale, status)
; universalTime : LONGLONG -> "int64"
; timeScale : UDateTimeScale -> "int"
; status : UErrorCode* in/out -> "int"
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。

; LONGLONG utmscale_toInt64(LONGLONG universalTime, UDateTimeScale timeScale, UErrorCode* status)
#uselib "icuin.dll"
#cfunc global utmscale_toInt64 "utmscale_toInt64" int64, int, int
; res = utmscale_toInt64(universalTime, timeScale, status)
; universalTime : LONGLONG -> "int64"
; timeScale : UDateTimeScale -> "int"
; status : UErrorCode* in/out -> "int"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	icuin = windows.NewLazySystemDLL("icuin.dll")
	procutmscale_toInt64 = icuin.NewProc("utmscale_toInt64")
)

// universalTime (LONGLONG), timeScale (UDateTimeScale), status (UErrorCode* in/out)
r1, _, err := procutmscale_toInt64.Call(
	uintptr(universalTime),
	uintptr(timeScale),
	uintptr(status),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LONGLONG

function utmscale_toInt64(
  universalTime: Int64;   // LONGLONG
  timeScale: Integer;   // UDateTimeScale
  status: Pointer   // UErrorCode* in/out
): Int64; cdecl;
  external 'icuin.dll' name 'utmscale_toInt64';

result := DllCall("icuin\utmscale_toInt64"
    , "Int64", universalTime   ; LONGLONG
    , "Int", timeScale   ; UDateTimeScale
    , "Ptr", status   ; UErrorCode* in/out
    , "Cdecl Int64")   ; return: LONGLONG

●utmscale_toInt64(universalTime, timeScale, status) = DLL("icuin.dll", "int64 utmscale_toInt64(int64, int, void*)")
# 呼び出し: utmscale_toInt64(universalTime, timeScale, status)
# universalTime : LONGLONG -> "int64"
# timeScale : UDateTimeScale -> "int"
# status : UErrorCode* in/out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。
# ※cdecl関数。DLL()宣言はstdcall前提。cdeclは EXEC_PTR(`cdecl`,…) を使用。