#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 */
typedef int /*<<< orphan*/ FILE;

/* Variables and functions */
int /*<<< orphan*/ fprintf(int /*<<< orphan*/ *, char *, ...);
void write_array_f64(FILE *f, const double *x, const unsigned int len) {
  unsigned int i;
  for (i = 0; i < len; i++) {
    fprintf(f, "%.17g", x[i]);
    if (i < len - 1) {
      fprintf(f, ",");
    }
  }
}


x86 assembly (clang, -O0):
<write_array_f64>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    %edx,-0x14(%rbp)
movl   $0x0,-0x18(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x14(%rbp),%eax
jae    118a <write_array_f64+0x7a>
mov    -0x8(%rbp),%rdi
mov    -0x10(%rbp),%rax
mov    -0x18(%rbp),%ecx
movsd  (%rax,%rcx,8),%xmm0
lea    0xeb3(%rip),%rsi
mov    $0x1,%al
call   1030 <fprintf@plt>
mov    -0x18(%rbp),%eax
mov    -0x14(%rbp),%ecx
sub    $0x1,%ecx
cmp    %ecx,%eax
jae    1177 <write_array_f64+0x67>
mov    -0x8(%rbp),%rdi
lea    0xe96(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
jmp    117c <write_array_f64+0x6c>
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    112a <write_array_f64+0x1a>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<write_array_f64>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
test   %edx,%edx
je     1180 <write_array_f64+0x60>
mov    %rsi,%r14
mov    %rdi,%rbx
lea    -0x1(%rdx),%r12d
mov    %edx,%r13d
xor    %ebp,%ebp
lea    0xebb(%rip),%r15
jmp    1159 <write_array_f64+0x39>
nopw   0x0(%rax,%rax,1)
add    $0x1,%rbp
cmp    %rbp,%r13
je     1180 <write_array_f64+0x60>
movsd  (%r14,%rbp,8),%xmm0
mov    %rbx,%rdi
mov    %r15,%rsi
mov    $0x1,%al
call   1040 <fprintf@plt>
cmp    %r12,%rbp
jae    1150 <write_array_f64+0x30>
mov    $0x2c,%edi
mov    %rbx,%rsi
call   1030 <fputc@plt>
jmp    1150 <write_array_f64+0x30>
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [6 x i8] c"%.17g\00"
@.str.1 = [2 x i8] c",\00"
define void @write_array_f64(i32* %0, double* %1, i32 %2) {
%4 = alloca i32*
%5 = alloca double*
%6 = alloca i32
%7 = alloca i32
store i32* %0, i32** %4
store double* %1, double** %5
store i32 %2, i32* %6
store i32 0, i32* %7
br label %8
8: ; preds = %28, %3
%9 = load i32, i32* %7
%10 = load i32, i32* %6
%11 = icmp ult i32 %9, %10
br i1 %11, label %12, label %31
12: ; preds = %8
%13 = load i32*, i32** %4
%14 = load double*, double** %5
%15 = load i32, i32* %7
%16 = zext i32 %15 to i64
%17 = getelementptr inbounds double, double* %14, i64 %16
%18 = load double, double* %17
%19 = call i32 (i32*, i8*, ...) @fprintf(i32* %13, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), double %18)
%20 = load i32, i32* %7
%21 = load i32, i32* %6
%22 = sub i32 %21, 1
%23 = icmp ult i32 %20, %22
br i1 %23, label %24, label %27
24: ; preds = %12
%25 = load i32*, i32** %4
%26 = call i32 (i32*, i8*, ...) @fprintf(i32* %25, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
br label %27
27: ; preds = %24, %12
br label %28
28: ; preds = %27
%29 = load i32, i32* %7
%30 = add i32 %29, 1
store i32 %30, i32* %7
br label %8
31: ; preds = %8
ret void
}

LLVM IR (-O2):
@.str = [6 x i8] c"%.17g\00"
define void @write_array_f64(i32* nocapture %0, double* nocapture %1, i32 %2) {
%4 = icmp eq i32 %2, 0
br i1 %4, label %20, label %5
5: ; preds = %3
%6 = add i32 %2, -1
%7 = zext i32 %6 to i64
%8 = zext i32 %2 to i64
br label %9
9: ; preds = %5, %17
%10 = phi i64 [ 0, %5 ], [ %18, %17 ]
%11 = getelementptr inbounds double, double* %1, i64 %10
%12 = load double, double* %11
%13 = tail call i32 (i32*, i8*, ...) @fprintf(i32* %0, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), double %12)
%14 = icmp ult i64 %10, %7
br i1 %14, label %15, label %17
15: ; preds = %9
%16 = tail call i32 @fputc(i32 44, i32* %0)
br label %17
17: ; preds = %9, %15
%18 = add nuw nsw i64 %10, 1
%19 = icmp eq i64 %18, %8
br i1 %19, label %20, label %9
20: ; preds = %17, %3
ret void
}