gluPerspective

// GLU32.dll
#include <windows.h>

void gluPerspective(
    DOUBLE fovy,
    DOUBLE aspect,
    DOUBLE zNear,
    DOUBLE zFar
);

<DllImport("GLU32.dll", ExactSpelling:=True)>
Public Shared Sub gluPerspective(
    fovy As Double,   ' DOUBLE
    aspect As Double,   ' DOUBLE
    zNear As Double,   ' DOUBLE
    zFar As Double   ' DOUBLE
)
End Sub

' fovy : DOUBLE
' aspect : DOUBLE
' zNear : DOUBLE
' zFar : DOUBLE
Declare PtrSafe Sub gluPerspective Lib "glu32" ( _
    ByVal fovy As Double, _
    ByVal aspect As Double, _
    ByVal zNear As Double, _
    ByVal zFar As Double)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

gluPerspective = ctypes.windll.glu32.gluPerspective
gluPerspective.restype = None
gluPerspective.argtypes = [
    ctypes.c_double,  # fovy : DOUBLE
    ctypes.c_double,  # aspect : DOUBLE
    ctypes.c_double,  # zNear : DOUBLE
    ctypes.c_double,  # zFar : DOUBLE
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GLU32.dll')
gluPerspective = Fiddle::Function.new(
  lib['gluPerspective'],
  [
    Fiddle::TYPE_DOUBLE,  # fovy : DOUBLE
    Fiddle::TYPE_DOUBLE,  # aspect : DOUBLE
    Fiddle::TYPE_DOUBLE,  # zNear : DOUBLE
    Fiddle::TYPE_DOUBLE,  # zFar : DOUBLE
  ],
  Fiddle::TYPE_VOID)

#[link(name = "glu32")]
extern "system" {
    fn gluPerspective(
        fovy: f64,  // DOUBLE
        aspect: f64,  // DOUBLE
        zNear: f64,  // DOUBLE
        zFar: f64  // DOUBLE
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("GLU32.dll")]
public static extern void gluPerspective(double fovy, double aspect, double zNear, double zFar);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GLU32_gluPerspective' -Namespace Win32 -PassThru
# $api::gluPerspective(fovy, aspect, zNear, zFar)

#uselib "GLU32.dll"
#func global gluPerspective "gluPerspective" double, double, double, double
; gluPerspective fovy, aspect, zNear, zFar
; fovy : DOUBLE -> "double"
; aspect : DOUBLE -> "double"
; zNear : DOUBLE -> "double"
; zFar : DOUBLE -> "double"

#uselib "GLU32.dll"
#func global gluPerspective "gluPerspective" double, double, double, double
; gluPerspective fovy, aspect, zNear, zFar
; fovy : DOUBLE -> "double"
; aspect : DOUBLE -> "double"
; zNear : DOUBLE -> "double"
; zFar : DOUBLE -> "double"

; void gluPerspective(DOUBLE fovy, DOUBLE aspect, DOUBLE zNear, DOUBLE zFar)
#uselib "GLU32.dll"
#func global gluPerspective "gluPerspective" double, double, double, double
; gluPerspective fovy, aspect, zNear, zFar
; fovy : DOUBLE -> "double"
; aspect : DOUBLE -> "double"
; zNear : DOUBLE -> "double"
; zFar : DOUBLE -> "double"

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

var (
	glu32 = windows.NewLazySystemDLL("GLU32.dll")
	procgluPerspective = glu32.NewProc("gluPerspective")
)

// fovy (DOUBLE), aspect (DOUBLE), zNear (DOUBLE), zFar (DOUBLE)
r1, _, err := procgluPerspective.Call(
	uintptr(math.Float64bits(fovy)),
	uintptr(math.Float64bits(aspect)),
	uintptr(math.Float64bits(zNear)),
	uintptr(math.Float64bits(zFar)),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void
// 注意: float/double 引数は proc.Call では XMM レジスタに渡せません。
// windows.SyscallN(proc.Addr(), math.Float64bits(x), ...) もしくは cgo を使用してください。

procedure gluPerspective(
  fovy: Double;   // DOUBLE
  aspect: Double;   // DOUBLE
  zNear: Double;   // DOUBLE
  zFar: Double   // DOUBLE
); stdcall;
  external 'GLU32.dll' name 'gluPerspective';

result := DllCall("GLU32\gluPerspective"
    , "Double", fovy   ; DOUBLE
    , "Double", aspect   ; DOUBLE
    , "Double", zNear   ; DOUBLE
    , "Double", zFar   ; DOUBLE
    , "Int")   ; return: void

●gluPerspective(fovy, aspect, zNear, zFar) = DLL("GLU32.dll", "int gluPerspective(double, double, double, double)")
# 呼び出し: gluPerspective(fovy, aspect, zNear, zFar)
# fovy : DOUBLE -> "double"
# aspect : DOUBLE -> "double"
# zNear : DOUBLE -> "double"
# zFar : DOUBLE -> "double"
# 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)。