#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 */
double power(float, int);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, ...);
int main() {
  float x;
  printf("Enter x (float): ");
  scanf("%f", &x);
  int y;
  printf("Enter y (int): ");
  scanf("%d", &y);
  printf("%f^%d == %f\n", x, y, power(x, y));
  return (0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeba(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xebe(%rip),%rdi
lea    -0x8(%rbp),%rsi
mov    $0x0,%al
call   1050 <scanf@plt>
lea    0xeaf(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xeb1(%rip),%rdi
lea    -0xc(%rbp),%rsi
mov    $0x0,%al
call   1050 <scanf@plt>
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  %xmm0,-0x18(%rbp)
mov    -0xc(%rbp),%eax
mov    %eax,-0x1c(%rbp)
movss  -0x8(%rbp),%xmm0
mov    -0xc(%rbp),%edi
call   1030 <power@plt>
mov    -0x1c(%rbp),%esi
movaps %xmm0,%xmm1
movsd  -0x18(%rbp),%xmm0
lea    0xe76(%rip),%rdi
mov    $0x2,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xec4(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xec8(%rip),%rdi
lea    0x4(%rsp),%rsi
xor    %eax,%eax
call   1050 <scanf@plt>
lea    0xeb8(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xeba(%rip),%rdi
mov    %rsp,%rsi
xor    %eax,%eax
call   1050 <scanf@plt>
movss  0x4(%rsp),%xmm0
cvtss2sd %xmm0,%xmm1
movsd  %xmm1,0x8(%rsp)
mov    (%rsp),%ebx
mov    %ebx,%edi
call   1030 <power@plt>
movaps %xmm0,%xmm1
lea    0xe8f(%rip),%rdi
movsd  0x8(%rsp),%xmm0
mov    %ebx,%esi
mov    $0x2,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [18 x i8] c"Enter x (float): \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [16 x i8] c"Enter y (int): \00"
@.str.3 = [3 x i8] c"%d\00"
@.str.4 = [13 x i8] c"%f^%d == %f\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
%3 = alloca i32
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0))
%5 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %2)
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i32* %3)
%8 = load float, float* %2
%9 = fpext float %8 to double
%10 = load i32, i32* %3
%11 = load float, float* %2
%12 = load i32, i32* %3
%13 = call double @power(float %11, i32 %12)
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.4, i64 0, i64 0), double %9, i32 %10, double %13)
ret i32 0
}

LLVM IR (-O2):
@.str = [18 x i8] c"Enter x (float): \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [16 x i8] c"Enter y (int): \00"
@.str.3 = [3 x i8] c"%d\00"
@.str.4 = [13 x i8] c"%f^%d == %f\0A\00"
define i32 @main() {
%1 = alloca float
%2 = alloca i32
%3 = bitcast float* %1 to i8*
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0))
%5 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %1)
%6 = bitcast i32* %2 to i8*
%7 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.2, i64 0, i64 0))
%8 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i32* %2)
%9 = load float, float* %1
%10 = fpext float %9 to double
%11 = load i32, i32* %2
%12 = call double @power(float %9, i32 %11)
%13 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.4, i64 0, i64 0), double %10, i32 %11, double %12)
ret i32 0
}