#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 pow(float, int);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, float *);
int main() {
  float radius;
  printf("Enter the area of the circle > ");
  scanf("%f", &radius);
  printf("A circle with the radius of \'%f\'\nwill have an area of: %.3f\n",
         radius, 3.141592 * pow(radius, 2));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xec2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xed4(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  %xmm0,-0x10(%rbp)
movss  -0x8(%rbp),%xmm0
mov    $0x2,%edi
call   1050 <pow@plt>
movaps %xmm0,%xmm2
movsd  -0x10(%rbp),%xmm0
movsd  0xe76(%rip),%xmm1
mulsd  %xmm2,%xmm1
lea    0xe96(%rip),%rdi
mov    $0x2,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
sub    $0x18,%rsp
lea    0xecd(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xedf(%rip),%rdi
lea    0xc(%rsp),%rsi
call   1040 <scanf@plt>
movss  0xc(%rsp),%xmm0
cvtss2sd %xmm0,%xmm1
movsd  %xmm1,0x10(%rsp)
mov    $0x2,%edi
call   1050 <pow@plt>
movaps %xmm0,%xmm1
mulsd  0xe88(%rip),%xmm1
lea    0xeac(%rip),%rdi
movsd  0x10(%rsp),%xmm0
mov    $0x2,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x18,%rsp
ret

LLVM IR (-O0):
@.str = [32 x i8] c"Enter the area of the circle > \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [61 x i8] c"A circle with the radius of '%f'\0Awill have an area of: %.3f\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
store i32 0, i32* %1
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %2)
%5 = load float, float* %2
%6 = fpext float %5 to double
%7 = load float, float* %2
%8 = call double @pow(float %7, i32 2)
%9 = fmul double 0x400921FAFC8B007A, %8
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([61 x i8], [61 x i8]* @.str.2, i64 0, i64 0), double %6, double %9)
ret i32 0
}

LLVM IR (-O2):
@.str = [32 x i8] c"Enter the area of the circle > \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [61 x i8] c"A circle with the radius of '%f'\0Awill have an area of: %.3f\0A\00"
define i32 @main() {
%1 = alloca float
%2 = bitcast float* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([32 x i8], [32 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %1)
%5 = load float, float* %1
%6 = fpext float %5 to double
%7 = call double @pow(float %5, i32 2)
%8 = fmul double %7, 0x400921FAFC8B007A
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([61 x i8], [61 x i8]* @.str.2, i64 0, i64 0), double %6, double %8)
ret i32 0
}