glMap1f

// OPENGL32.dll
#include <windows.h>

void glMap1f(
    DWORD target,
    FLOAT u1,
    FLOAT u2,
    INT stride,
    INT order,
    const FLOAT* points
);

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Sub glMap1f(
    target As UInteger,   ' DWORD
    u1 As Single,   ' FLOAT
    u2 As Single,   ' FLOAT
    stride As Integer,   ' INT
    order As Integer,   ' INT
    ByRef points As Single   ' FLOAT*
)
End Sub

' target : DWORD
' u1 : FLOAT
' u2 : FLOAT
' stride : INT
' order : INT
' points : FLOAT*
Declare PtrSafe Sub glMap1f Lib "opengl32" ( _
    ByVal target As Long, _
    ByVal u1 As Single, _
    ByVal u2 As Single, _
    ByVal stride As Long, _
    ByVal order As Long, _
    ByRef points As Single)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

glMap1f = ctypes.windll.opengl32.glMap1f
glMap1f.restype = None
glMap1f.argtypes = [
    wintypes.DWORD,  # target : DWORD
    ctypes.c_float,  # u1 : FLOAT
    ctypes.c_float,  # u2 : FLOAT
    ctypes.c_int,  # stride : INT
    ctypes.c_int,  # order : INT
    ctypes.POINTER(ctypes.c_float),  # points : FLOAT*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glMap1f = Fiddle::Function.new(
  lib['glMap1f'],
  [
    -Fiddle::TYPE_INT,  # target : DWORD
    Fiddle::TYPE_FLOAT,  # u1 : FLOAT
    Fiddle::TYPE_FLOAT,  # u2 : FLOAT
    Fiddle::TYPE_INT,  # stride : INT
    Fiddle::TYPE_INT,  # order : INT
    Fiddle::TYPE_VOIDP,  # points : FLOAT*
  ],
  Fiddle::TYPE_VOID)

#[link(name = "opengl32")]
extern "system" {
    fn glMap1f(
        target: u32,  // DWORD
        u1: f32,  // FLOAT
        u2: f32,  // FLOAT
        stride: i32,  // INT
        order: i32,  // INT
        points: *const f32  // FLOAT*
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glMap1f(uint target, float u1, float u2, int stride, int order, ref float points);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glMap1f' -Namespace Win32 -PassThru
# $api::glMap1f(target, u1, u2, stride, order, points)

#uselib "OPENGL32.dll"
#func global glMap1f "glMap1f" sptr, float, float, sptr, sptr, sptr
; glMap1f target, u1, u2, stride, order, varptr(points)
; target : DWORD -> "sptr"
; u1 : FLOAT -> "float"
; u2 : FLOAT -> "float"
; stride : INT -> "sptr"
; order : INT -> "sptr"
; points : FLOAT* -> "sptr"

#uselib "OPENGL32.dll"
#func global glMap1f "glMap1f" int, float, float, int, int, var
; glMap1f target, u1, u2, stride, order, points
; target : DWORD -> "int"
; u1 : FLOAT -> "float"
; u2 : FLOAT -> "float"
; stride : INT -> "int"
; order : INT -> "int"
; points : FLOAT* -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; void glMap1f(DWORD target, FLOAT u1, FLOAT u2, INT stride, INT order, FLOAT* points)
#uselib "OPENGL32.dll"
#func global glMap1f "glMap1f" int, float, float, int, int, var
; glMap1f target, u1, u2, stride, order, points
; target : DWORD -> "int"
; u1 : FLOAT -> "float"
; u2 : FLOAT -> "float"
; stride : INT -> "int"
; order : INT -> "int"
; points : FLOAT* -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglMap1f = opengl32.NewProc("glMap1f")
)

// target (DWORD), u1 (FLOAT), u2 (FLOAT), stride (INT), order (INT), points (FLOAT*)
r1, _, err := procglMap1f.Call(
	uintptr(target),
	uintptr(math.Float32bits(u1)),
	uintptr(math.Float32bits(u2)),
	uintptr(stride),
	uintptr(order),
	uintptr(points),
)
_ = 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 glMap1f(
  target: DWORD;   // DWORD
  u1: Single;   // FLOAT
  u2: Single;   // FLOAT
  stride: Integer;   // INT
  order: Integer;   // INT
  points: Pointer   // FLOAT*
); stdcall;
  external 'OPENGL32.dll' name 'glMap1f';

result := DllCall("OPENGL32\glMap1f"
    , "UInt", target   ; DWORD
    , "Float", u1   ; FLOAT
    , "Float", u2   ; FLOAT
    , "Int", stride   ; INT
    , "Int", order   ; INT
    , "Ptr", points   ; FLOAT*
    , "Int")   ; return: void

●glMap1f(target, u1, u2, stride, order, points) = DLL("OPENGL32.dll", "int glMap1f(dword, float, float, int, int, void*)")
# 呼び出し: glMap1f(target, u1, u2, stride, order, points)
# target : DWORD -> "dword"
# u1 : FLOAT -> "float"
# u2 : FLOAT -> "float"
# stride : INT -> "int"
# order : INT -> "int"
# points : FLOAT* -> "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)。