#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 */
float fabs(float);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, float *);
int main() {
  float a, b;
  float area;
  scanf("%f", &a);
  printf(" ");
  scanf("%f", &b);
  area = fabs(a * b / 2);
  printf("The area of (%.4f,%.4f), (%.4f,0) and (0,%.4f) is %.4f.", a, b, a, b,
         area);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xebe(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1050 <scanf@plt>
lea    0xeb1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xea0(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1050 <scanf@plt>
movss  -0x8(%rbp),%xmm0
mulss  -0xc(%rbp),%xmm0
movss  0xe81(%rip),%xmm1
divss  %xmm1,%xmm0
call   1040 <fabs@plt>
movss  %xmm0,-0x10(%rbp)
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movss  -0xc(%rbp),%xmm1
cvtss2sd %xmm1,%xmm1
movss  -0x8(%rbp),%xmm2
cvtss2sd %xmm2,%xmm2
movss  -0xc(%rbp),%xmm3
cvtss2sd %xmm3,%xmm3
movss  -0x10(%rbp),%xmm4
cvtss2sd %xmm4,%xmm4
lea    0xe48(%rip),%rdi
mov    $0x5,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xee4(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
mov    $0x20,%edi
call   1030 <putchar@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
movss  0xc(%rsp),%xmm2
movss  0x8(%rsp),%xmm1
cvtss2sd %xmm2,%xmm0
mulss  %xmm1,%xmm2
mulss  0xe84(%rip),%xmm2
andps  0xe8d(%rip),%xmm2
cvtss2sd %xmm1,%xmm1
cvtss2sd %xmm2,%xmm4
lea    0xe91(%rip),%rdi
movaps %xmm0,%xmm2
movaps %xmm1,%xmm3
mov    $0x5,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%f\00"
@.str.1 = [2 x i8] c" \00"
@.str.2 = [56 x i8] c"The area of (%.4f,%.4f), (%.4f,0) and (0,%.4f) is %.4f.\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
%3 = alloca float
%4 = alloca float
store i32 0, i32* %1
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), float* %2)
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), float* %3)
%8 = load float, float* %2
%9 = load float, float* %3
%10 = fmul float %8, %9
%11 = fdiv float %10, 2.000000e+00
%12 = call float @fabs(float %11)
store float %12, float* %4
%13 = load float, float* %2
%14 = fpext float %13 to double
%15 = load float, float* %3
%16 = fpext float %15 to double
%17 = load float, float* %2
%18 = fpext float %17 to double
%19 = load float, float* %3
%20 = fpext float %19 to double
%21 = load float, float* %4
%22 = fpext float %21 to double
%23 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([56 x i8], [56 x i8]* @.str.2, i64 0, i64 0), double %14, double %16, double %18, double %20, double %22)
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%f\00"
@.str.2 = [56 x i8] c"The area of (%.4f,%.4f), (%.4f,0) and (0,%.4f) is %.4f.\00"
define i32 @main() {
%1 = alloca float
%2 = alloca float
%3 = bitcast float* %1 to i8*
%4 = bitcast float* %2 to i8*
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), float* %1)
%6 = call i32 @putchar(i32 32)
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), float* %2)
%8 = load float, float* %1
%9 = load float, float* %2
%10 = fmul float %8, %9
%11 = fmul float %10, 5.000000e-01
%12 = call float @llvm.fabs.f32(float %11)
%13 = fpext float %8 to double
%14 = fpext float %9 to double
%15 = fpext float %12 to double
%16 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([56 x i8], [56 x i8]* @.str.2, i64 0, i64 0), double %13, double %14, double %13, double %14, double %15)
ret i32 0
}