#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 *, float *);
int main() {
  float solut(float, float, float, float);
  float a, b, c, d;
  printf("input a,b,c,d:");
  scanf("%f,%f,%f,%f", &a, &b, &c, &d);
  printf("the root is x = %f\n", solut(a, b, c, d));
  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   1030 <printf@plt>
lea    0xebb(%rip),%rdi
lea    -0x8(%rbp),%rsi
lea    -0xc(%rbp),%rdx
lea    -0x10(%rbp),%rcx
lea    -0x14(%rbp),%r8
call   1040 <scanf@plt>
movss  -0x8(%rbp),%xmm0
movss  -0xc(%rbp),%xmm1
movss  -0x10(%rbp),%xmm2
movss  -0x14(%rbp),%xmm3
call   1050 <solut@plt>
cvtss2sd %xmm0,%xmm0
lea    0xe8e(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
sub    $0x18,%rsp
lea    0xec5(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xec6(%rip),%rdi
lea    0x14(%rsp),%rsi
lea    0x10(%rsp),%rdx
lea    0xc(%rsp),%rcx
lea    0x8(%rsp),%r8
call   1040 <scanf@plt>
movss  0x14(%rsp),%xmm0
movss  0x10(%rsp),%xmm1
movss  0xc(%rsp),%xmm2
movss  0x8(%rsp),%xmm3
call   1050 <solut@plt>
cvtss2sd %xmm0,%xmm0
lea    0xe91(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x18,%rsp
ret

LLVM IR (-O0):
@.str = [15 x i8] c"input a,b,c,d:\00"
@.str.1 = [12 x i8] c"%f,%f,%f,%f\00"
@.str.2 = [20 x i8] c"the root is x = %f\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
%3 = alloca float
%4 = alloca float
%5 = alloca float
store i32 0, i32* %1
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), float* %2, float* %3, float* %4, float* %5)
%8 = load float, float* %2
%9 = load float, float* %3
%10 = load float, float* %4
%11 = load float, float* %5
%12 = call float @solut(float %8, float %9, float %10, float %11)
%13 = fpext float %12 to double
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), double %13)
ret i32 0
}

LLVM IR (-O2):
@.str = [15 x i8] c"input a,b,c,d:\00"
@.str.1 = [12 x i8] c"%f,%f,%f,%f\00"
@.str.2 = [20 x i8] c"the root is x = %f\0A\00"
define i32 @main() {
%1 = alloca float
%2 = alloca float
%3 = alloca float
%4 = alloca float
%5 = bitcast float* %1 to i8*
%6 = bitcast float* %2 to i8*
%7 = bitcast float* %3 to i8*
%8 = bitcast float* %4 to i8*
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), float* %1, float* %2, float* %3, float* %4)
%11 = load float, float* %1
%12 = load float, float* %2
%13 = load float, float* %3
%14 = load float, float* %4
%15 = call float @solut(float %11, float %12, float %13, float %14)
%16 = fpext float %15 to double
%17 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), double %16)
ret i32 0
}