#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 */
float drand48();
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, float *);
int /*<<< orphan*/ srand48(long);
scalar_t__ time(int /*<<< orphan*/ *);
int main() {
  float input, randOutput;
  printf("Enter number: ");
  scanf("%f", &input);
  srand48((long)time(NULL));
  randOutput = drand48() * input;
  printf("Random number between 0 and %f: %f\n", input, randOutput);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xea1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xea2(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1060 <scanf@plt>
xor    %eax,%eax
mov    %eax,%edi
call   1040 <time@plt>
mov    %rax,%rdi
call   1050 <srand48@plt>
mov    $0x0,%al
call   1070 <drand48@plt>
mulss  -0x4(%rbp),%xmm0
movss  %xmm0,-0x8(%rbp)
movss  -0x4(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movss  -0x8(%rbp),%xmm1
cvtss2sd %xmm1,%xmm1
lea    0xe61(%rip),%rdi
mov    $0x2,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xea8(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xea9(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1060 <scanf@plt>
xor    %edi,%edi
call   1040 <time@plt>
mov    %rax,%rdi
call   1050 <srand48@plt>
xor    %eax,%eax
call   1070 <drand48@plt>
movss  0x4(%rsp),%xmm1
mulss  %xmm1,%xmm0
cvtss2sd %xmm1,%xmm2
xorps  %xmm1,%xmm1
cvtss2sd %xmm0,%xmm1
lea    0xe70(%rip),%rdi
movaps %xmm2,%xmm0
mov    $0x2,%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 = [36 x i8] c"Random number between 0 and %f: %f\0A\00"
define i32 @main() {
%1 = alloca float
%2 = alloca float
%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* %1)
%5 = call i64 @time(i32* null)
%6 = call i32 @srand48(i64 %5)
%7 = call float (...) @drand48()
%8 = load float, float* %1
%9 = fmul float %7, %8
store float %9, float* %2
%10 = load float, float* %1
%11 = fpext float %10 to double
%12 = load float, float* %2
%13 = fpext float %12 to double
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.2, i64 0, i64 0), double %11, double %13)
ret i32 0
}

LLVM IR (-O2):
@.str = [15 x i8] c"Enter number: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [36 x i8] c"Random number between 0 and %f: %f\0A\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 = call i64 @time(i32* null)
%6 = call i32 @srand48(i64 %5)
%7 = call float (...) @drand48()
%8 = load float, float* %1
%9 = fmul float %7, %8
%10 = fpext float %8 to double
%11 = fpext float %9 to double
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([36 x i8], [36 x i8]* @.str.2, i64 0, i64 0), double %10, double %11)
ret i32 0
}