#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 */
double RAND_MAX;
scalar_t__ rand();
int /*<<< orphan*/ srand(int /*<<< orphan*/);
int /*<<< orphan*/ time(int /*<<< orphan*/ *);
void fillRand_d(double *f, int L) {
  srand(time(NULL));
  for (int m = 0; m < L; m++) {
    f[m] = ((double)(rand())) / RAND_MAX;
  }
}


x86 assembly (clang, -O0):
<fillRand_d>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
xor    %eax,%eax
mov    %eax,%edi
call   1040 <time@plt>
mov    %eax,%edi
call   1030 <srand@plt>
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1194 <fillRand_d+0x64>
mov    $0x0,%al
call   1050 <rand@plt>
cvtsi2sd %rax,%xmm0
mov    0x2e73(%rip),%rax
divsd  (%rax),%xmm0
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
movsd  %xmm0,(%rax,%rcx,8)
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1156 <fillRand_d+0x26>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<fillRand_d>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
mov    %esi,%ebp
mov    %rdi,%r15
xor    %edi,%edi
call   1040 <time@plt>
mov    %eax,%edi
call   1030 <srand@plt>
test   %ebp,%ebp
jle    1183 <fillRand_d+0x53>
mov    %ebp,%ebp
mov    0x2e91(%rip),%r14
xor    %ebx,%ebx
nopl   0x0(%rax)
xor    %eax,%eax
call   1050 <rand@plt>
xorps  %xmm0,%xmm0
cvtsi2sd %rax,%xmm0
divsd  (%r14),%xmm0
movsd  %xmm0,(%r15,%rbx,8)
add    $0x1,%rbx
cmp    %rbx,%rbp
jne    1160 <fillRand_d+0x30>
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@RAND_MAX = global double 0.000000e+00
define void @fillRand_d(double* %0, i32 %1) {
%3 = alloca double*
%4 = alloca i32
%5 = alloca i32
store double* %0, double** %3
store i32 %1, i32* %4
%6 = call i32 @time(i32* null)
%7 = call i32 @srand(i32 %6)
store i32 0, i32* %5
br label %8
8: ; preds = %21, %2
%9 = load i32, i32* %5
%10 = load i32, i32* %4
%11 = icmp slt i32 %9, %10
br i1 %11, label %12, label %24
12: ; preds = %8
%13 = call i64 (...) @rand()
%14 = sitofp i64 %13 to double
%15 = load double, double* @RAND_MAX
%16 = fdiv double %14, %15
%17 = load double*, double** %3
%18 = load i32, i32* %5
%19 = sext i32 %18 to i64
%20 = getelementptr inbounds double, double* %17, i64 %19
store double %16, double* %20
br label %21
21: ; preds = %12
%22 = load i32, i32* %5
%23 = add nsw i32 %22, 1
store i32 %23, i32* %5
br label %8
24: ; preds = %8
ret void
}

LLVM IR (-O2):
@RAND_MAX = global double 0.000000e+00
define void @fillRand_d(double* nocapture writeonly %0, i32 %1) {
%3 = tail call i32 @time(i32* null)
%4 = tail call i32 @srand(i32 %3)
%5 = icmp sgt i32 %1, 0
br i1 %5, label %6, label %8
6: ; preds = %2
%7 = zext i32 %1 to i64
br label %9
8: ; preds = %9, %2
ret void
9: ; preds = %6, %9
%10 = phi i64 [ 0, %6 ], [ %16, %9 ]
%11 = tail call i64 (...) @rand()
%12 = sitofp i64 %11 to double
%13 = load double, double* @RAND_MAX
%14 = fdiv double %12, %13
%15 = getelementptr inbounds double, double* %0, i64 %10
store double %14, double* %15
%16 = add nuw nsw i64 %10, 1
%17 = icmp eq i64 %16, %7
br i1 %17, label %8, label %9
}