#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(int, int, int, int);
void resize(int w, int h) {
  glViewport(0, 0, w, h);
  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  gluPerspective(60., w / (double)h, 1., 20.);
  glMatrixMode(GL_MODELVIEW);
}


x86 assembly (clang, -O0):
<resize>:
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>
cvtsi2sdl -0x4(%rbp),%xmm0
cvtsi2sdl -0x8(%rbp),%xmm1
divsd  %xmm1,%xmm0
cvttsd2si %xmm0,%esi
mov    $0x3c,%edi
mov    $0x1,%edx
mov    $0x14,%ecx
call   1040 <gluPerspective@plt>
mov    0x2e49(%rip),%rax
mov    (%rax),%edi
call   1030 <glMatrixMode@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<resize>:
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>
cvtsi2sd %ebp,%xmm0
cvtsi2sd %ebx,%xmm1
divsd  %xmm1,%xmm0
cvttsd2si %xmm0,%esi
mov    $0x3c,%edi
mov    $0x1,%edx
mov    $0x14,%ecx
call   1040 <gluPerspective@plt>
mov    0x2e54(%rip),%rax
mov    (%rax),%edi
add    $0x8,%rsp
pop    %rbx
pop    %rbp
jmp    1030 <glMatrixMode@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* %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 = sitofp i32 %11 to double
%13 = load i32, i32* %4
%14 = sitofp i32 %13 to double
%15 = fdiv double %12, %14
%16 = fptosi double %15 to i32
%17 = call i32 @gluPerspective(i32 60, i32 %16, i32 1, i32 20)
%18 = load i32, i32* @GL_MODELVIEW
%19 = call i32 @glMatrixMode(i32 %18)
ret void
}

LLVM IR (-O2):
@GL_PROJECTION = global i32 0
@GL_MODELVIEW = global i32 0
define void @resize(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 = sitofp i32 %0 to double
%8 = sitofp i32 %1 to double
%9 = fdiv double %7, %8
%10 = fptosi double %9 to i32
%11 = tail call i32 @gluPerspective(i32 60, i32 %10, i32 1, i32 20)
%12 = load i32, i32* @GL_MODELVIEW
%13 = tail call i32 @glMatrixMode(i32 %12)
ret void
}