#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */
typedef int /*<<< orphan*/ GLsizei;
typedef int GLfloat;

/* Variables and functions */
int /*<<< orphan*/ GL_MODELVIEW;
int /*<<< orphan*/ GL_PROJECTION;
int /*<<< orphan*/ glLoadIdentity();
int /*<<< orphan*/ glMatrixMode(int /*<<< orphan*/);
int /*<<< orphan*/ glViewport(int /*<<< orphan*/, int /*<<< orphan*/,
                              int /*<<< orphan*/, int /*<<< orphan*/);
int /*<<< orphan*/ gluPerspective(double, int, double, double);
void unproject_reshape(int w, int h) {
  glViewport(0, 0, (GLsizei)w, (GLsizei)h);
  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  gluPerspective(45.0, (GLfloat)w / (GLfloat)h, 1.0, 100.0);
  glMatrixMode(GL_MODELVIEW);
  glLoadIdentity();
}


x86 assembly (clang, -O0):
<unproject_reshape>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x4(%rbp)
mov    %esi,-0x8(%rbp)
mov    -0x4(%rbp),%edx
mov    -0x8(%rbp),%ecx
xor    %esi,%esi
mov    %esi,%edi
call   1060 <glViewport@plt>
mov    0x2e74(%rip),%rax
mov    (%rax),%edi
call   1030 <glMatrixMode@plt>
mov    $0x0,%al
call   1050 <glLoadIdentity@plt>
mov    -0x4(%rbp),%eax
cltd
idivl  -0x8(%rbp)
mov    %eax,%edi
movsd  0xe7d(%rip),%xmm0
movsd  0xe7d(%rip),%xmm1
movsd  0xe7d(%rip),%xmm2
call   1040 <gluPerspective@plt>
mov    0x2e49(%rip),%rax
mov    (%rax),%edi
call   1030 <glMatrixMode@plt>
mov    $0x0,%al
call   1050 <glLoadIdentity@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<unproject_reshape>:
push   %rbp
push   %rbx
push   %rax
mov    %esi,%ebx
mov    %edi,%ebp
xor    %edi,%edi
xor    %esi,%esi
mov    %ebp,%edx
mov    %ebx,%ecx
call   1060 <glViewport@plt>
mov    0x2e7d(%rip),%rax
mov    (%rax),%edi
call   1030 <glMatrixMode@plt>
xor    %eax,%eax
call   1050 <glLoadIdentity@plt>
mov    %ebp,%eax
cltd
idiv   %ebx
movsd  0xe8a(%rip),%xmm0
movsd  0xe8a(%rip),%xmm1
movsd  0xe8a(%rip),%xmm2
mov    %eax,%edi
call   1040 <gluPerspective@plt>
mov    0x2e54(%rip),%rax
mov    (%rax),%edi
call   1030 <glMatrixMode@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
jmp    1050 <glLoadIdentity@plt>

LLVM IR (-O0):
@GL_PROJECTION = global i32 0
@GL_MODELVIEW = global i32 0
define void @unproject_reshape(i32 %0, i32 %1) {
%3 = alloca i32
%4 = alloca i32
store i32 %0, i32* %3
store i32 %1, i32* %4
%5 = load i32, i32* %3
%6 = load i32, i32* %4
%7 = call i32 @glViewport(i32 0, i32 0, i32 %5, i32 %6)
%8 = load i32, i32* @GL_PROJECTION
%9 = call i32 @glMatrixMode(i32 %8)
%10 = call i32 (...) @glLoadIdentity()
%11 = load i32, i32* %3
%12 = load i32, i32* %4
%13 = sdiv i32 %11, %12
%14 = call i32 @gluPerspective(double 4.500000e+01, i32 %13, double 1.000000e+00, double 1.000000e+02)
%15 = load i32, i32* @GL_MODELVIEW
%16 = call i32 @glMatrixMode(i32 %15)
%17 = call i32 (...) @glLoadIdentity()
ret void
}

LLVM IR (-O2):
@GL_PROJECTION = global i32 0
@GL_MODELVIEW = global i32 0
define void @unproject_reshape(i32 %0, i32 %1) {
%3 = tail call i32 @glViewport(i32 0, i32 0, i32 %0, i32 %1)
%4 = load i32, i32* @GL_PROJECTION
%5 = tail call i32 @glMatrixMode(i32 %4)
%6 = tail call i32 (...) @glLoadIdentity()
%7 = sdiv i32 %0, %1
%8 = tail call i32 @gluPerspective(double 4.500000e+01, i32 %7, double 1.000000e+00, double 1.000000e+02)
%9 = load i32, i32* @GL_MODELVIEW
%10 = tail call i32 @glMatrixMode(i32 %9)
%11 = tail call i32 (...) @glLoadIdentity()
ret void
}