#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 uint32_t;

/* Variables and functions */
int atoi(char *);
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *);
int int_pow(int, int);
double pow(double, double);
int /*<<< orphan*/ printf(char *, int, int, int);
int /*<<< orphan*/ stderr;
int main(int argc, char **argv) {
  uint32_t x, n;
  if (argc != 3) {
    fprintf(stderr, "Usage: power x n\n");
    exit(1);
  }
  x = atoi(argv[1]);
  n = atoi(argv[2]);
  printf("pow( %u, %u ) = %f\n", x, n, pow((double)x, (double)n));
  printf("int_pow( %u, %u ) = %u\n", x, n, int_pow(x, n));
  exit(0);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x3,-0x8(%rbp)
je     119f <main+0x3f>
mov    0x2e59(%rip),%rax
mov    (%rax),%edi
lea    0xe70(%rip),%rsi
call   1050 <fprintf@plt>
mov    $0x1,%edi
call   1080 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1070 <atoi@plt>
mov    %eax,-0x14(%rbp)
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rdi
call   1070 <atoi@plt>
mov    %eax,-0x18(%rbp)
mov    -0x14(%rbp),%eax
mov    %eax,-0x28(%rbp)
mov    -0x18(%rbp),%eax
mov    %eax,-0x24(%rbp)
cvtsi2sdl -0x14(%rbp),%xmm0
cvtsi2sdl -0x18(%rbp),%xmm1
call   1060 <pow@plt>
mov    -0x28(%rbp),%esi
mov    -0x24(%rbp),%edx
cvttsd2si %xmm0,%ecx
lea    0xe27(%rip),%rdi
call   1040 <printf@plt>
mov    -0x14(%rbp),%eax
mov    %eax,-0x20(%rbp)
mov    -0x18(%rbp),%eax
mov    %eax,-0x1c(%rbp)
mov    -0x14(%rbp),%edi
mov    -0x18(%rbp),%esi
call   1030 <int_pow@plt>
mov    -0x20(%rbp),%esi
mov    -0x1c(%rbp),%edx
mov    %eax,%ecx
lea    0xe10(%rip),%rdi
call   1040 <printf@plt>
xor    %edi,%edi
call   1080 <exit@plt>

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %rbx
push   %rax
cmp    $0x3,%edi
jne    11c4 <main+0x64>
mov    %rsi,%rbx
mov    0x8(%rsi),%rdi
call   1070 <atoi@plt>
mov    %eax,%ebp
mov    0x10(%rbx),%rdi
call   1070 <atoi@plt>
mov    %eax,%ebx
cvtsi2sd %ebp,%xmm0
cvtsi2sd %eax,%xmm1
call   1060 <pow@plt>
cvttsd2si %xmm0,%ecx
lea    0xe79(%rip),%rdi
mov    %ebp,%esi
mov    %ebx,%edx
call   1040 <printf@plt>
mov    %ebp,%edi
mov    %ebx,%esi
call   1030 <int_pow@plt>
lea    0xe74(%rip),%rdi
mov    %ebp,%esi
mov    %ebx,%edx
mov    %eax,%ecx
call   1040 <printf@plt>
xor    %edi,%edi
call   1080 <exit@plt>
mov    0x2e15(%rip),%rax
mov    (%rax),%edi
lea    0xe2c(%rip),%rsi
call   1050 <fprintf@plt>
mov    $0x1,%edi
call   1080 <exit@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [18 x i8] c"Usage: power x n\0A\00"
@.str.1 = [20 x i8] c"pow( %u, %u ) = %f\0A\00"
@.str.2 = [24 x i8] c"int_pow( %u, %u ) = %u\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = load i32, i32* %4
%9 = icmp ne i32 %8, 3
br i1 %9, label %10, label %14
10: ; preds = %2
%11 = load i32, i32* @stderr
%12 = call i32 @fprintf(i32 %11, i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0))
%13 = call i32 @exit(i32 1)
unreachable
14: ; preds = %2
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 1
%17 = load i8*, i8** %16
%18 = call i32 @atoi(i8* %17)
store i32 %18, i32* %6
%19 = load i8**, i8*** %5
%20 = getelementptr inbounds i8*, i8** %19, i64 2
%21 = load i8*, i8** %20
%22 = call i32 @atoi(i8* %21)
store i32 %22, i32* %7
%23 = load i32, i32* %6
%24 = load i32, i32* %7
%25 = load i32, i32* %6
%26 = sitofp i32 %25 to double
%27 = load i32, i32* %7
%28 = sitofp i32 %27 to double
%29 = call double @pow(double %26, double %28)
%30 = fptosi double %29 to i32
%31 = call i32 @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.1, i64 0, i64 0), i32 %23, i32 %24, i32 %30)
%32 = load i32, i32* %6
%33 = load i32, i32* %7
%34 = load i32, i32* %6
%35 = load i32, i32* %7
%36 = call i32 @int_pow(i32 %34, i32 %35)
%37 = call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.2, i64 0, i64 0), i32 %32, i32 %33, i32 %36)
%38 = call i32 @exit(i32 0)
unreachable
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [18 x i8] c"Usage: power x n\0A\00"
@.str.1 = [20 x i8] c"pow( %u, %u ) = %f\0A\00"
@.str.2 = [24 x i8] c"int_pow( %u, %u ) = %u\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 3
br i1 %3, label %8, label %4
4: ; preds = %2
%5 = load i32, i32* @stderr
%6 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0))
%7 = tail call i32 @exit(i32 1)
unreachable
8: ; preds = %2
%9 = getelementptr inbounds i8*, i8** %1, i64 1
%10 = load i8*, i8** %9
%11 = tail call i32 @atoi(i8* %10)
%12 = getelementptr inbounds i8*, i8** %1, i64 2
%13 = load i8*, i8** %12
%14 = tail call i32 @atoi(i8* %13)
%15 = sitofp i32 %11 to double
%16 = sitofp i32 %14 to double
%17 = tail call double @pow(double %15, double %16)
%18 = fptosi double %17 to i32
%19 = tail call i32 @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.1, i64 0, i64 0), i32 %11, i32 %14, i32 %18)
%20 = tail call i32 @int_pow(i32 %11, i32 %14)
%21 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.2, i64 0, i64 0), i32 %11, i32 %14, i32 %20)
%22 = tail call i32 @exit(i32 0)
unreachable
}