#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 */

/* 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, int);
int /*<<< orphan*/ gluPerspective(float, float, float, float);
void resize(int w, int h) {
  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  glViewport(0, 0, w, h);
  gluPerspective(45.0f, 1.0f * w / h, 1.0f, 100.0f);
  glMatrixMode(GL_MODELVIEW);
  glLoadIdentity();
}


x86 assembly (clang, -O0):
<resize>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x4(%rbp)
mov    %esi,-0x8(%rbp)
mov    0x2e83(%rip),%rax
mov    (%rax),%edi
call   1030 <glMatrixMode@plt>
mov    $0x0,%al
call   1050 <glLoadIdentity@plt>
mov    -0x4(%rbp),%edx
mov    -0x8(%rbp),%ecx
xor    %esi,%esi
mov    %esi,%edi
call   1060 <glViewport@plt>
cvtsi2ssl -0x4(%rbp),%xmm0
movss  0xe85(%rip),%xmm1
mulss  %xmm0,%xmm1
cvtsi2ssl -0x8(%rbp),%xmm0
divss  %xmm0,%xmm1
movss  0xe6c(%rip),%xmm0
movss  0xe68(%rip),%xmm2
movss  0xe64(%rip),%xmm3
call   1040 <gluPerspective@plt>
mov    0x2e38(%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):
<resize>:
push   %rbp
push   %rbx
push   %rax
mov    %esi,%ebx
mov    %edi,%ebp
mov    0x2e8a(%rip),%rax
mov    (%rax),%edi
call   1030 <glMatrixMode@plt>
xor    %eax,%eax
call   1050 <glLoadIdentity@plt>
xor    %edi,%edi
xor    %esi,%esi
mov    %ebp,%edx
mov    %ebx,%ecx
call   1060 <glViewport@plt>
cvtsi2ss %ebp,%xmm1
cvtsi2ss %ebx,%xmm0
divss  %xmm0,%xmm1
movss  0xe83(%rip),%xmm0
movss  0xe7f(%rip),%xmm2
movss  0xe7b(%rip),%xmm3
call   1040 <gluPerspective@plt>
mov    0x2e4f(%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 @resize(i32 %0, i32 %1) {
%3 = alloca i32
%4 = alloca i32
store i32 %0, i32* %3
store i32 %1, i32* %4
%5 = load i32, i32* @GL_PROJECTION
%6 = call i32 @glMatrixMode(i32 %5)
%7 = call i32 (...) @glLoadIdentity()
%8 = load i32, i32* %3
%9 = load i32, i32* %4
%10 = call i32 @glViewport(i32 0, i32 0, i32 %8, i32 %9)
%11 = load i32, i32* %3
%12 = sitofp i32 %11 to float
%13 = fmul float 1.000000e+00, %12
%14 = load i32, i32* %4
%15 = sitofp i32 %14 to float
%16 = fdiv float %13, %15
%17 = call i32 @gluPerspective(float 4.500000e+01, float %16, float 1.000000e+00, float 1.000000e+02)
%18 = load i32, i32* @GL_MODELVIEW
%19 = call i32 @glMatrixMode(i32 %18)
%20 = call i32 (...) @glLoadIdentity()
ret void
}

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