#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 n;
  scanf("%f", &n);
  if (n > 0) {
    printf("%.4f is positive,%n");
  } else {
    if (n == 0) {
      printf("input is zero");
    } else {
      printf("%.4f is negative,%n");
    }
  }
  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>
movss  -0x8(%rbp),%xmm0
xorps  %xmm1,%xmm1
ucomiss %xmm1,%xmm0
jbe    1161 <main+0x41>
lea    0xeac(%rip),%rdi
call   1030 <printf@plt>
jmp    119a <main+0x7a>
movss  -0x8(%rbp),%xmm0
xorps  %xmm1,%xmm1
ucomiss %xmm1,%xmm0
jne    1189 <main+0x69>
jp     1189 <main+0x69>
lea    0xe98(%rip),%rdi
call   1030 <printf@plt>
jmp    1195 <main+0x75>
lea    0xe95(%rip),%rdi
call   1030 <printf@plt>
jmp    119a <main+0x7a>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xed8(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
movss  0x4(%rsp),%xmm0
xorps  %xmm1,%xmm1
ucomiss %xmm0,%xmm1
lea    0xee0(%rip),%rax
lea    0xecb(%rip),%rcx
cmovne %rax,%rcx
cmovp  %rax,%rcx
ucomiss %xmm1,%xmm0
lea    0xea5(%rip),%rdi
cmovbe %rcx,%rdi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%f\00"
@.str.1 = [20 x i8] c"%.4f is positive,%n\00"
@.str.2 = [14 x i8] c"input is zero\00"
@.str.3 = [20 x i8] c"%.4f is negative,%n\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 ogt float %4, 0.000000e+00
br i1 %5, label %6, label %8
6: ; preds = %0
%7 = call i32 @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.1, i64 0, i64 0))
br label %16
8: ; preds = %0
%9 = load float, float* %2
%10 = fcmp oeq float %9, 0.000000e+00
br i1 %10, label %11, label %13
11: ; preds = %8
%12 = call i32 @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.2, i64 0, i64 0))
br label %15
13: ; preds = %8
%14 = call i32 @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.3, i64 0, i64 0))
br label %15
15: ; preds = %13, %11
br label %16
16: ; preds = %15, %6
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%f\00"
@.str.1 = [20 x i8] c"%.4f is positive,%n\00"
@.str.2 = [14 x i8] c"input is zero\00"
@.str.3 = [20 x i8] c"%.4f is negative,%n\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 ogt float %4, 0.000000e+00
%6 = fcmp oeq float %4, 0.000000e+00
%7 = select i1 %6, i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.3, i64 0, i64 0)
%8 = select i1 %5, i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.1, i64 0, i64 0), i8* %7
%9 = call i32 @printf(i8* dereferenceable(1) %8)
ret i32 0
}