#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*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/ *, char *, double);
int /*<<< orphan*/ fputc(char, int /*<<< orphan*/ *);
int /*<<< orphan*/ nrerror(char *);
void write_dvector(double *v, long nl, long nh, char *format, char *filename) {
  long k;
  FILE *f;
  f = fopen(filename, "wt");
  if (f == NULL) {
    nrerror("Can't open file in write_dvector");
  }
  for (k = nl; k <= nh; k++) {
    fprintf(f, format, v[k]);
  }
  fputc('\n', f);
  fclose(f);
}


x86 assembly (clang, -O0):
<write_dvector>:
push   %rbp
mov    %rsp,%rbp
sub    $0x40,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    %rdx,-0x18(%rbp)
mov    %rcx,-0x20(%rbp)
mov    %r8,-0x28(%rbp)
mov    -0x28(%rbp),%rdi
lea    0xe89(%rip),%rsi
call   1070 <fopen@plt>
mov    %rax,-0x38(%rbp)
cmpq   $0x0,-0x38(%rbp)
jne    1197 <write_dvector+0x47>
lea    0xe71(%rip),%rdi
call   1030 <nrerror@plt>
mov    -0x10(%rbp),%rax
mov    %rax,-0x30(%rbp)
mov    -0x30(%rbp),%rax
cmp    -0x18(%rbp),%rax
jg     11d8 <write_dvector+0x88>
mov    -0x38(%rbp),%rdi
mov    -0x20(%rbp),%rsi
mov    -0x8(%rbp),%rax
mov    -0x30(%rbp),%rcx
movsd  (%rax,%rcx,8),%xmm0
call   1060 <fprintf@plt>
mov    -0x30(%rbp),%rax
add    $0x1,%rax
mov    %rax,-0x30(%rbp)
jmp    119f <write_dvector+0x4f>
mov    -0x38(%rbp),%rsi
mov    $0xa,%edi
call   1050 <fputc@plt>
mov    -0x38(%rbp),%rdi
call   1040 <fclose@plt>
add    $0x40,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<write_dvector>:
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
mov    %rcx,%r14
mov    %rdx,%r15
mov    %rsi,%rbx
mov    %rdi,%r13
lea    0xe94(%rip),%rsi
mov    %r8,%rdi
call   1070 <fopen@plt>
mov    %rax,%r12
test   %rax,%rax
je     1183 <write_dvector+0x33>
cmp    %r15,%rbx
jle    1194 <write_dvector+0x44>
jmp    11bb <write_dvector+0x6b>
lea    0xe79(%rip),%rdi
call   1030 <nrerror@plt>
cmp    %r15,%rbx
jg     11bb <write_dvector+0x6b>
add    $0x1,%r15
nopl   0x0(%rax,%rax,1)
movsd  0x0(%r13,%rbx,8),%xmm0
mov    %r12,%rdi
mov    %r14,%rsi
call   1060 <fprintf@plt>
add    $0x1,%rbx
cmp    %rbx,%r15
jne    11a0 <write_dvector+0x50>
mov    $0xa,%edi
mov    %r12,%rsi
call   1050 <fputc@plt>
mov    %r12,%rdi
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
jmp    1040 <fclose@plt>

LLVM IR (-O0):
@.str = [3 x i8] c"wt\00"
@.str.1 = [33 x i8] c"Can't open file in write_dvector\00"
define void @write_dvector(double* %0, i64 %1, i64 %2, i8* %3, i8* %4) {
%6 = alloca double*
%7 = alloca i64
%8 = alloca i64
%9 = alloca i8*
%10 = alloca i8*
%11 = alloca i64
%12 = alloca i32*
store double* %0, double** %6
store i64 %1, i64* %7
store i64 %2, i64* %8
store i8* %3, i8** %9
store i8* %4, i8** %10
%13 = load i8*, i8** %10
%14 = call i32* @fopen(i8* %13, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
store i32* %14, i32** %12
%15 = load i32*, i32** %12
%16 = icmp eq i32* %15, null
br i1 %16, label %17, label %19
17: ; preds = %5
%18 = call i32 @nrerror(i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str.1, i64 0, i64 0))
br label %19
19: ; preds = %17, %5
%20 = load i64, i64* %7
store i64 %20, i64* %11
br label %21
21: ; preds = %33, %19
%22 = load i64, i64* %11
%23 = load i64, i64* %8
%24 = icmp sle i64 %22, %23
br i1 %24, label %25, label %36
25: ; preds = %21
%26 = load i32*, i32** %12
%27 = load i8*, i8** %9
%28 = load double*, double** %6
%29 = load i64, i64* %11
%30 = getelementptr inbounds double, double* %28, i64 %29
%31 = load double, double* %30
%32 = call i32 @fprintf(i32* %26, i8* %27, double %31)
br label %33
33: ; preds = %25
%34 = load i64, i64* %11
%35 = add nsw i64 %34, 1
store i64 %35, i64* %11
br label %21
36: ; preds = %21
%37 = load i32*, i32** %12
%38 = call i32 @fputc(i8 signext 10, i32* %37)
%39 = load i32*, i32** %12
%40 = call i32 @fclose(i32* %39)
ret void
}

LLVM IR (-O2):
@.str = [3 x i8] c"wt\00"
@.str.1 = [33 x i8] c"Can't open file in write_dvector\00"
define void @write_dvector(double* nocapture %0, i64 %1, i64 %2, i8* nocapture %3, i8* nocapture %4) {
%6 = tail call i32* @fopen(i8* %4, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%7 = icmp eq i32* %6, null
br i1 %7, label %8, label %10
8: ; preds = %5
%9 = tail call i32 @nrerror(i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str.1, i64 0, i64 0))
br label %10
10: ; preds = %8, %5
%11 = icmp sgt i64 %1, %2
br i1 %11, label %19, label %12
12: ; preds = %10, %12
%13 = phi i64 [ %17, %12 ], [ %1, %10 ]
%14 = getelementptr inbounds double, double* %0, i64 %13
%15 = load double, double* %14
%16 = tail call i32 @fprintf(i32* %6, i8* %3, double %15)
%17 = add i64 %13, 1
%18 = icmp eq i64 %13, %2
br i1 %18, label %19, label %12
19: ; preds = %12, %10
%20 = tail call i32 @fputc(i8 signext 10, i32* %6)
%21 = tail call i32 @fclose(i32* %6)
ret void
}