#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*/ round_f(float, int);
int /*<<< orphan*/ scanf(char *, ...);
int main() {
  float f;
  int d;
  printf("Enter the float: ");
  scanf("%f", &f);
  printf("Enter the place of decimal to round off: ");
  scanf("%d", &d);
  printf("Ans: %.*f \n", d, round_f(f, d));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeba(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xebe(%rip),%rdi
lea    -0x8(%rbp),%rsi
mov    $0x0,%al
call   1050 <scanf@plt>
lea    0xeaf(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xecb(%rip),%rdi
lea    -0xc(%rbp),%rsi
mov    $0x0,%al
call   1050 <scanf@plt>
mov    -0xc(%rbp),%eax
mov    %eax,-0x10(%rbp)
movss  -0x8(%rbp),%xmm0
mov    -0xc(%rbp),%edi
call   1030 <round_f@plt>
mov    -0x10(%rbp),%esi
mov    %eax,%edx
lea    0xea4(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xec4(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xec8(%rip),%rdi
lea    0xc(%rsp),%rsi
xor    %eax,%eax
call   1050 <scanf@plt>
lea    0xeb8(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xed4(%rip),%rdi
lea    0x8(%rsp),%rsi
xor    %eax,%eax
call   1050 <scanf@plt>
mov    0x8(%rsp),%ebx
movss  0xc(%rsp),%xmm0
mov    %ebx,%edi
call   1030 <round_f@plt>
lea    0xeb3(%rip),%rdi
mov    %ebx,%esi
mov    %eax,%edx
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [18 x i8] c"Enter the float: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [42 x i8] c"Enter the place of decimal to round off: \00"
@.str.3 = [3 x i8] c"%d\00"
@.str.4 = [12 x i8] c"Ans: %.*f \0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
%3 = alloca i32
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0))
%5 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %2)
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([42 x i8], [42 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i32* %3)
%8 = load i32, i32* %3
%9 = load float, float* %2
%10 = load i32, i32* %3
%11 = call i32 @round_f(float %9, i32 %10)
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.4, i64 0, i64 0), i32 %8, i32 %11)
ret i32 0
}

LLVM IR (-O2):
@.str = [18 x i8] c"Enter the float: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [42 x i8] c"Enter the place of decimal to round off: \00"
@.str.3 = [3 x i8] c"%d\00"
@.str.4 = [12 x i8] c"Ans: %.*f \0A\00"
define i32 @main() {
%1 = alloca float
%2 = alloca i32
%3 = bitcast float* %1 to i8*
%4 = bitcast i32* %2 to i8*
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0))
%6 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %1)
%7 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([42 x i8], [42 x i8]* @.str.2, i64 0, i64 0))
%8 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i32* %2)
%9 = load i32, i32* %2
%10 = load float, float* %1
%11 = call i32 @round_f(float %10, i32 %9)
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.4, i64 0, i64 0), i32 %9, i32 %11)
ret i32 0
}