#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*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, float *, float *, float *);
void main() {
  float a, b, c;
  extern float x1, x2;
  void getroot(float a, float b, float c);
  printf("Enter the value of a,b,c:\n");
  scanf("%f %f %f", &a, &b, &c);
  getroot(a, b, c);
  printf("x1= %f,x2= %f", x1, x2);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xec1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xece(%rip),%rdi
lea    -0x4(%rbp),%rsi
lea    -0x8(%rbp),%rdx
lea    -0xc(%rbp),%rcx
call   1040 <scanf@plt>
movss  -0x4(%rbp),%xmm0
movss  -0x8(%rbp),%xmm1
movss  -0xc(%rbp),%xmm2
call   1050 <getroot@plt>
mov    0x2e6f(%rip),%rax
movss  (%rax),%xmm0
cvtss2sd %xmm0,%xmm0
mov    0x2e50(%rip),%rax
movss  (%rax),%xmm1
cvtss2sd %xmm1,%xmm1
lea    0xe8d(%rip),%rdi
mov    $0x2,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
sub    $0x18,%rsp
lea    0xecc(%rip),%rdi
call   1030 <puts@plt>
lea    0xea9(%rip),%rdi
lea    0x14(%rsp),%rsi
lea    0x10(%rsp),%rdx
lea    0xc(%rsp),%rcx
call   1050 <scanf@plt>
movss  0x14(%rsp),%xmm0
movss  0x10(%rsp),%xmm1
movss  0xc(%rsp),%xmm2
call   1060 <getroot@plt>
mov    0x2e5f(%rip),%rax
movss  (%rax),%xmm0
cvtss2sd %xmm0,%xmm0
mov    0x2e40(%rip),%rax
movss  (%rax),%xmm1
cvtss2sd %xmm1,%xmm1
lea    0xe62(%rip),%rdi
mov    $0x2,%al
call   1040 <printf@plt>
add    $0x18,%rsp
ret

LLVM IR (-O0):
@.str = [27 x i8] c"Enter the value of a,b,c:\0A\00"
@.str.1 = [9 x i8] c"%f %f %f\00"
@.str.2 = [14 x i8] c"x1= %f,x2= %f\00"
@x1 = external global float
@x2 = external global float
define void @main() {
%1 = alloca float
%2 = alloca float
%3 = alloca float
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.1, i64 0, i64 0), float* %1, float* %2, float* %3)
%6 = load float, float* %1
%7 = load float, float* %2
%8 = load float, float* %3
%9 = load float, float* @x1
%10 = fpext float %9 to double
%11 = load float, float* @x2
%12 = fpext float %11 to double
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.2, i64 0, i64 0), double %10, double %12)
ret void
}

LLVM IR (-O2):
@.str.1 = [9 x i8] c"%f %f %f\00"
@.str.2 = [14 x i8] c"x1= %f,x2= %f\00"
@x1 = external global float
@x2 = external global float
@str = [26 x i8] c"Enter the value of a,b,c:\00"
define void @main() {
%1 = alloca float
%2 = alloca float
%3 = alloca float
%4 = bitcast float* %1 to i8*
%5 = bitcast float* %2 to i8*
%6 = bitcast float* %3 to i8*
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @str, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.1, i64 0, i64 0), float* %1, float* %2, float* %3)
%9 = load float, float* %1
%10 = load float, float* %2
%11 = load float, float* %3
%12 = load float, float* @x1
%13 = fpext float %12 to double
%14 = load float, float* @x2
%15 = fpext float %14 to double
%16 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.2, i64 0, i64 0), double %13, double %15)
ret void
}