#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 *);
int main() {
  float a;
  scanf("%f", &a);
  if (a < 0) {
    printf("%.4f", a);
    printf(" is negative\n");
  } else if (a == 0)
    printf("input is zero\n");
  else {
    printf("%.4f", a);
    printf(" is positive");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
xorps  %xmm0,%xmm0
ucomiss -0x8(%rbp),%xmm0
jbe    1176 <main+0x56>
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xea7(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
lea    0xe9e(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11ca <main+0xaa>
movss  -0x8(%rbp),%xmm0
xorps  %xmm1,%xmm1
ucomiss %xmm1,%xmm0
jne    11a0 <main+0x80>
jp     11a0 <main+0x80>
lea    0xe82(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11c5 <main+0xa5>
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xe53(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
lea    0xe67(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11ca <main+0xaa>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xec8(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
movss  0x4(%rsp),%xmm0
xorps  %xmm1,%xmm1
ucomiss %xmm0,%xmm1
jbe    1170 <main+0x40>
cvtss2sd %xmm0,%xmm0
lea    0xea8(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
lea    0xeba(%rip),%rdi
call   1030 <puts@plt>
jmp    11a5 <main+0x75>
ucomiss %xmm1,%xmm0
jne    1185 <main+0x55>
jp     1185 <main+0x55>
lea    0xe97(%rip),%rdi
call   1030 <puts@plt>
jmp    11a5 <main+0x75>
cvtss2sd %xmm0,%xmm0
lea    0xe73(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
lea    0xe6a(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%f\00"
@.str.1 = [5 x i8] c"%.4f\00"
@.str.2 = [14 x i8] c" is negative\0A\00"
@.str.3 = [15 x i8] c"input is zero\0A\00"
@.str.4 = [13 x i8] c" is positive\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
store i32 0, i32* %1
%3 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), float* %2)
%4 = load float, float* %2
%5 = fcmp olt float %4, 0.000000e+00
br i1 %5, label %6, label %11
6: ; preds = %0
%7 = load float, float* %2
%8 = fpext float %7 to double
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), double %8)
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.2, i64 0, i64 0))
br label %22
11: ; preds = %0
%12 = load float, float* %2
%13 = fcmp oeq float %12, 0.000000e+00
br i1 %13, label %14, label %16
14: ; preds = %11
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.3, i64 0, i64 0))
br label %21
16: ; preds = %11
%17 = load float, float* %2
%18 = fpext float %17 to double
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), double %18)
%20 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.4, i64 0, i64 0))
br label %21
21: ; preds = %16, %14
br label %22
22: ; preds = %21, %6
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%f\00"
@.str.1 = [5 x i8] c"%.4f\00"
@.str.4 = [13 x i8] c" is positive\00"
@str = [14 x i8] c"input is zero\00"
@str.5 = [13 x i8] c" is negative\00"
define i32 @main() {
%1 = alloca float
%2 = bitcast float* %1 to i8*
%3 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), float* %1)
%4 = load float, float* %1
%5 = fcmp olt float %4, 0.000000e+00
br i1 %5, label %6, label %10
6: ; preds = %0
%7 = fpext float %4 to double
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), double %7)
%9 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @str.5, i64 0, i64 0))
br label %18
10: ; preds = %0
%11 = fcmp oeq float %4, 0.000000e+00
br i1 %11, label %12, label %14
12: ; preds = %10
%13 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @str, i64 0, i64 0))
br label %18
14: ; preds = %10
%15 = fpext float %4 to double
%16 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), double %15)
%17 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.4, i64 0, i64 0))
br label %18
18: ; preds = %12, %14, %6
ret i32 0
}