#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;
  printf("Enter number: ");
  scanf("%f", &n);
  printf("Truncated to one decimal place: %d.%d\n", (int)(n),
         (int)(n * 10 - 10 * ((int)(n))));
  printf("Rounded to one decimal place: %.1f", n);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xece(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xecf(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
cvttss2si -0x8(%rbp),%esi
movss  -0x8(%rbp),%xmm0
cvttss2si -0x8(%rbp),%eax
imul   $0xa,%eax,%eax
cvtsi2ss %eax,%xmm1
movd   %xmm1,%eax
xor    $0x80000000,%eax
movd   %eax,%xmm1
movss  0xe88(%rip),%xmm2
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
cvttss2si %xmm0,%edx
lea    0xe8b(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xe9b(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xedc(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xedd(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
movss  0x4(%rsp),%xmm0
cvttss2si %xmm0,%esi
lea    (%rsi,%rsi,1),%eax
lea    (%rax,%rax,4),%eax
cvtsi2ss %eax,%xmm1
mulss  0xea4(%rip),%xmm0
subss  %xmm1,%xmm0
cvttss2si %xmm0,%edx
lea    0xeab(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
movss  0x4(%rsp),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xeba(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [15 x i8] c"Enter number: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [39 x i8] c"Truncated to one decimal place: %d.%d\0A\00"
@.str.3 = [35 x i8] c"Rounded to one decimal place: %.1f\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
store i32 0, i32* %1
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %2)
%5 = load float, float* %2
%6 = fptosi float %5 to i32
%7 = load float, float* %2
%8 = load float, float* %2
%9 = fptosi float %8 to i32
%10 = mul nsw i32 10, %9
%11 = sitofp i32 %10 to float
%12 = fneg float %11
%13 = call float @llvm.fmuladd.f32(float %7, float 1.000000e+01, float %12)
%14 = fptosi float %13 to i32
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([39 x i8], [39 x i8]* @.str.2, i64 0, i64 0), i32 %6, i32 %14)
%16 = load float, float* %2
%17 = fpext float %16 to double
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.3, i64 0, i64 0), double %17)
ret i32 0
}

LLVM IR (-O2):
@.str = [15 x i8] c"Enter number: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [39 x i8] c"Truncated to one decimal place: %d.%d\0A\00"
@.str.3 = [35 x i8] c"Rounded to one decimal place: %.1f\00"
define i32 @main() {
%1 = alloca float
%2 = bitcast float* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %1)
%5 = load float, float* %1
%6 = fptosi float %5 to i32
%7 = mul nsw i32 %6, 10
%8 = sitofp i32 %7 to float
%9 = fneg float %8
%10 = call float @llvm.fmuladd.f32(float %5, float 1.000000e+01, float %9)
%11 = fptosi float %10 to i32
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([39 x i8], [39 x i8]* @.str.2, i64 0, i64 0), i32 %6, i32 %11)
%13 = load float, float* %1
%14 = fpext float %13 to double
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @.str.3, i64 0, i64 0), double %14)
ret i32 0
}