#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 */
double betai(float, float, float);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
scalar_t__ feof(int /*<<< orphan*/ *);
int /*<<< orphan*/ fgets(char *, int, int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fscanf(int /*<<< orphan*/ *, char *, ...);
int /*<<< orphan*/ nrerror(char *);
int /*<<< orphan*/ printf(char *, ...);
scalar_t__ strncmp(char *, char *, int);
int main(void) {
  char txt[80];
  int i, nval;
  float a, b, x, val;
  FILE *fp;
  if ((fp = fopen("fncval.dat", "r")) == NULL)
    nrerror("Data file fncval.dat not found\n");
  fgets(txt, 80, fp);
  while (strncmp(txt, "Incomplete Beta Function", 24)) {
    fgets(txt, 80, fp);
    if (feof(fp))
      nrerror("Data not found in fncval.dat\n");
  }
  fscanf(fp, "%d %*s", &nval);
  printf("\n%s\n", txt);
  printf("%5s %10s %12s %14s %13s \n", "a", "b", "x", "actual", "betai(x)");
  for (i = 1; i <= nval; i++) {
    fscanf(fp, "%f %f %f %f", &a, &b, &x, &val);
    printf("%6.2f %12.6f %12.6f %12.6f %12.6f\n", a, b, x, val, betai(a, b, x));
  }
  fclose(fp);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0xa0,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xe57(%rip),%rdi
lea    0xe5b(%rip),%rsi
call   10b0 <fopen@plt>
mov    %rax,-0x80(%rbp)
cmp    $0x0,%rax
jne    11cf <main+0x3f>
lea    0xe43(%rip),%rdi
call   1040 <nrerror@plt>
lea    -0x60(%rbp),%rdi
mov    -0x80(%rbp),%rdx
mov    $0x50,%esi
call   1080 <fgets@plt>
lea    -0x60(%rbp),%rdi
lea    0xe41(%rip),%rsi
mov    $0x18,%edx
call   1030 <strncmp@plt>
cmp    $0x0,%rax
je     1236 <main+0xa6>
lea    -0x60(%rbp),%rdi
mov    -0x80(%rbp),%rdx
mov    $0x50,%esi
call   1080 <fgets@plt>
mov    -0x80(%rbp),%rdi
call   1090 <feof@plt>
cmp    $0x0,%rax
je     1231 <main+0xa1>
lea    0xe1a(%rip),%rdi
call   1040 <nrerror@plt>
jmp    11e1 <main+0x51>
mov    -0x80(%rbp),%rdi
lea    0xe23(%rip),%rsi
lea    -0x68(%rbp),%rdx
mov    $0x0,%al
call   1070 <fscanf@plt>
lea    -0x60(%rbp),%rsi
lea    0xe14(%rip),%rdi
mov    $0x0,%al
call   1060 <printf@plt>
lea    0xe0b(%rip),%rdi
lea    0xe1e(%rip),%rsi
lea    0xe19(%rip),%rdx
lea    0xe14(%rip),%rcx
lea    0xe0f(%rip),%r8
lea    0xe0f(%rip),%r9
mov    $0x0,%al
call   1060 <printf@plt>
movl   $0x1,-0x64(%rbp)
mov    -0x64(%rbp),%eax
cmp    -0x68(%rbp),%eax
jg     135b <main+0x1cb>
mov    -0x80(%rbp),%rdi
lea    0xdf3(%rip),%rsi
lea    -0x6c(%rbp),%rdx
lea    -0x70(%rbp),%rcx
lea    -0x74(%rbp),%r8
lea    -0x78(%rbp),%r9
mov    $0x0,%al
call   1070 <fscanf@plt>
movss  -0x6c(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  %xmm0,-0x88(%rbp)
ff
movss  -0x70(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  %xmm0,-0xa0(%rbp)
ff
movss  -0x74(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  %xmm0,-0x98(%rbp)
ff
movss  -0x78(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  %xmm0,-0x90(%rbp)
ff
movss  -0x6c(%rbp),%xmm0
movss  -0x70(%rbp),%xmm1
movss  -0x74(%rbp),%xmm2
call   10a0 <betai@plt>
movsd  -0xa0(%rbp),%xmm1
ff
movsd  -0x98(%rbp),%xmm2
ff
movsd  -0x90(%rbp),%xmm3
ff
movaps %xmm0,%xmm4
movsd  -0x88(%rbp),%xmm0
ff
lea    0xd66(%rip),%rdi
mov    $0x5,%al
call   1060 <printf@plt>
mov    -0x64(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x64(%rbp)
jmp    1296 <main+0x106>
mov    -0x80(%rbp),%rdi
call   1050 <fclose@plt>
xor    %eax,%eax
add    $0xa0,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
sub    $0x98,%rsp
lea    0xe58(%rip),%rdi
lea    0xe5c(%rip),%rsi
call   10b0 <fopen@plt>
mov    %rax,%rbx
test   %rax,%rax
jne    11c8 <main+0x38>
lea    0xe4a(%rip),%rdi
call   1040 <nrerror@plt>
lea    0x40(%rsp),%rbp
mov    %rbp,%rdi
mov    $0x50,%esi
mov    %rbx,%rdx
call   1080 <fgets@plt>
lea    0xe49(%rip),%rsi
mov    %rbp,%rdi
mov    $0x18,%edx
call   1030 <strncmp@plt>
test   %rax,%rax
je     124c <main+0xbc>
lea    0x40(%rsp),%rbp
lea    0xe2b(%rip),%r14
lea    0xe3d(%rip),%r15
jmp    1225 <main+0x95>
nopl   0x0(%rax,%rax,1)
mov    %rbp,%rdi
mov    %r14,%rsi
mov    $0x18,%edx
call   1030 <strncmp@plt>
test   %rax,%rax
je     124c <main+0xbc>
mov    %rbp,%rdi
mov    $0x50,%esi
mov    %rbx,%rdx
call   1080 <fgets@plt>
mov    %rbx,%rdi
call   1090 <feof@plt>
test   %rax,%rax
je     1210 <main+0x80>
mov    %r15,%rdi
call   1040 <nrerror@plt>
jmp    1210 <main+0x80>
lea    0xe11(%rip),%rsi
lea    0xc(%rsp),%rdx
mov    %rbx,%rdi
xor    %eax,%eax
call   1070 <fscanf@plt>
lea    0xe02(%rip),%rdi
lea    0x40(%rsp),%rsi
xor    %eax,%eax
call   1060 <printf@plt>
lea    0xdf4(%rip),%rdi
lea    0xe07(%rip),%rsi
lea    0xe02(%rip),%rdx
lea    0xdfd(%rip),%rcx
lea    0xdf8(%rip),%r8
lea    0xdf8(%rip),%r9
xor    %eax,%eax
call   1060 <printf@plt>
cmpl   $0x0,0xc(%rsp)
jle    1371 <main+0x1e1>
lea    0x18(%rsp),%r12
lea    0x14(%rsp),%r13
lea    0x10(%rsp),%rbp
lea    0xde5(%rip),%r14
xor    %r15d,%r15d
nopw   0x0(%rax,%rax,1)
mov    %rbx,%rdi
lea    0xdc6(%rip),%rsi
lea    0x1c(%rsp),%rdx
mov    %r12,%rcx
mov    %r13,%r8
mov    %rbp,%r9
xor    %eax,%eax
call   1070 <fscanf@plt>
movss  0x1c(%rsp),%xmm0
xorps  %xmm1,%xmm1
cvtss2sd %xmm0,%xmm1
movsd  %xmm1,0x38(%rsp)
movss  0x18(%rsp),%xmm1
xorps  %xmm2,%xmm2
cvtss2sd %xmm1,%xmm2
movsd  %xmm2,0x30(%rsp)
movss  0x14(%rsp),%xmm2
xorps  %xmm3,%xmm3
cvtss2sd %xmm2,%xmm3
movsd  %xmm3,0x28(%rsp)
movss  0x10(%rsp),%xmm3
cvtss2sd %xmm3,%xmm3
movsd  %xmm3,0x20(%rsp)
call   10a0 <betai@plt>
movaps %xmm0,%xmm4
mov    %r14,%rdi
movsd  0x38(%rsp),%xmm0
movsd  0x30(%rsp),%xmm1
movsd  0x28(%rsp),%xmm2
movsd  0x20(%rsp),%xmm3
mov    $0x5,%al
call   1060 <printf@plt>
add    $0x1,%r15d
cmp    0xc(%rsp),%r15d
jl     12d0 <main+0x140>
mov    %rbx,%rdi
call   1050 <fclose@plt>
xor    %eax,%eax
add    $0x98,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [11 x i8] c"fncval.dat\00"
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [32 x i8] c"Data file fncval.dat not found\0A\00"
@.str.3 = [25 x i8] c"Incomplete Beta Function\00"
@.str.4 = [30 x i8] c"Data not found in fncval.dat\0A\00"
@.str.5 = [7 x i8] c"%d %*s\00"
@.str.6 = [5 x i8] c"\0A%s\0A\00"
@.str.7 = [26 x i8] c"%5s %10s %12s %14s %13s \0A\00"
@.str.8 = [2 x i8] c"a\00"
@.str.9 = [2 x i8] c"b\00"
@.str.10 = [2 x i8] c"x\00"
@.str.11 = [7 x i8] c"actual\00"
@.str.12 = [9 x i8] c"betai(x)\00"
@.str.13 = [12 x i8] c"%f %f %f %f\00"
@.str.14 = [35 x i8] c"%6.2f %12.6f %12.6f %12.6f %12.6f\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [80 x i8]
%3 = alloca i32
%4 = alloca i32
%5 = alloca float
%6 = alloca float
%7 = alloca float
%8 = alloca float
%9 = alloca i32*
store i32 0, i32* %1
%10 = call i32* @fopen(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
store i32* %10, i32** %9
%11 = icmp eq i32* %10, null
br i1 %11, label %12, label %14
12: ; preds = %0
%13 = call i32 @nrerror(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str.2, i64 0, i64 0))
br label %14
14: ; preds = %12, %0
%15 = getelementptr inbounds [80 x i8], [80 x i8]* %2, i64 0, i64 0
%16 = load i32*, i32** %9
%17 = call i32 @fgets(i8* %15, i32 80, i32* %16)
br label %18
18: ; preds = %31, %14
%19 = getelementptr inbounds [80 x i8], [80 x i8]* %2, i64 0, i64 0
%20 = call i64 @strncmp(i8* %19, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.3, i64 0, i64 0), i32 24)
%21 = icmp ne i64 %20, 0
br i1 %21, label %22, label %32
22: ; preds = %18
%23 = getelementptr inbounds [80 x i8], [80 x i8]* %2, i64 0, i64 0
%24 = load i32*, i32** %9
%25 = call i32 @fgets(i8* %23, i32 80, i32* %24)
%26 = load i32*, i32** %9
%27 = call i64 @feof(i32* %26)
%28 = icmp ne i64 %27, 0
br i1 %28, label %29, label %31
29: ; preds = %22
%30 = call i32 @nrerror(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.4, i64 0, i64 0))
br label %31
31: ; preds = %29, %22
br label %18
32: ; preds = %18
%33 = load i32*, i32** %9
%34 = call i32 (i32*, i8*, ...) @fscanf(i32* %33, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.5, i64 0, i64 0), i32* %4)
%35 = getelementptr inbounds [80 x i8], [80 x i8]* %2, i64 0, i64 0
%36 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.6, i64 0, i64 0), i8* %35)
%37 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.7, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.8, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.9, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.10, i64 0, i64 0), i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.11, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.12, i64 0, i64 0))
store i32 1, i32* %3
br label %38
38: ; preds = %58, %32
%39 = load i32, i32* %3
%40 = load i32, i32* %4
%41 = icmp sle i32 %39, %40
br i1 %41, label %42, label %61
42: ; preds = %38
%43 = load i32*, i32** %9
%44 = call i32 (i32*, i8*, ...) @fscanf(i32* %43, i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.13, i64 0, i64 0), float* %5, float* %6, float* %7, float* %8)
%45 = load float, float* %5
%46 = fpext float %45 to double
%47 = load float, float* %6
%48 = fpext float %47 to double
%49 = load float, float* %7
%50 = fpext float %49 to double
%51 = load float, float* %8
%52 = fpext float %51 to double
%53 = load float, float* %5
%54 = load float, float* %6
%55 = load float, float* %7
%56 = call double @betai(float %53, float %54, float %55)
%57 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.14, i64 0, i64 0), double %46, double %48, double %50, double %52, double %56)
br label %58
58: ; preds = %42
%59 = load i32, i32* %3
%60 = add nsw i32 %59, 1
store i32 %60, i32* %3
br label %38
61: ; preds = %38
%62 = load i32*, i32** %9
%63 = call i32 @fclose(i32* %62)
ret i32 0
}

LLVM IR (-O2):
@.str = [11 x i8] c"fncval.dat\00"
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [32 x i8] c"Data file fncval.dat not found\0A\00"
@.str.3 = [25 x i8] c"Incomplete Beta Function\00"
@.str.4 = [30 x i8] c"Data not found in fncval.dat\0A\00"
@.str.5 = [7 x i8] c"%d %*s\00"
@.str.6 = [5 x i8] c"\0A%s\0A\00"
@.str.7 = [26 x i8] c"%5s %10s %12s %14s %13s \0A\00"
@.str.8 = [2 x i8] c"a\00"
@.str.9 = [2 x i8] c"b\00"
@.str.10 = [2 x i8] c"x\00"
@.str.11 = [7 x i8] c"actual\00"
@.str.12 = [9 x i8] c"betai(x)\00"
@.str.13 = [12 x i8] c"%f %f %f %f\00"
@.str.14 = [35 x i8] c"%6.2f %12.6f %12.6f %12.6f %12.6f\0A\00"
define i32 @main() {
%1 = alloca [80 x i8]
%2 = alloca i32
%3 = alloca float
%4 = alloca float
%5 = alloca float
%6 = alloca float
%7 = getelementptr inbounds [80 x i8], [80 x i8]* %1, i64 0, i64 0
%8 = bitcast i32* %2 to i8*
%9 = bitcast float* %3 to i8*
%10 = bitcast float* %4 to i8*
%11 = bitcast float* %5 to i8*
%12 = bitcast float* %6 to i8*
%13 = tail call i32* @fopen(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%14 = icmp eq i32* %13, null
br i1 %14, label %15, label %17
15: ; preds = %0
%16 = tail call i32 @nrerror(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str.2, i64 0, i64 0))
br label %17
17: ; preds = %15, %0
%18 = call i32 @fgets(i8* %7, i32 80, i32* %13)
%19 = call i64 @strncmp(i8* %7, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.3, i64 0, i64 0), i32 24)
%20 = icmp eq i64 %19, 0
br i1 %20, label %30, label %21
21: ; preds = %17, %27
%22 = call i32 @fgets(i8* %7, i32 80, i32* %13)
%23 = call i64 @feof(i32* %13)
%24 = icmp eq i64 %23, 0
br i1 %24, label %27, label %25
25: ; preds = %21
%26 = call i32 @nrerror(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.4, i64 0, i64 0))
br label %27
27: ; preds = %25, %21
%28 = call i64 @strncmp(i8* %7, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.3, i64 0, i64 0), i32 24)
%29 = icmp eq i64 %28, 0
br i1 %29, label %30, label %21
30: ; preds = %27, %17
%31 = call i32 (i32*, i8*, ...) @fscanf(i32* %13, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.5, i64 0, i64 0), i32* %2)
%32 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.6, i64 0, i64 0), i8* %7)
%33 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @.str.7, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.8, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.9, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.10, i64 0, i64 0), i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.11, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.12, i64 0, i64 0))
%34 = load i32, i32* %2
%35 = icmp slt i32 %34, 1
br i1 %35, label %52, label %36
36: ; preds = %30, %36
%37 = phi i32 [ %49, %36 ], [ 1, %30 ]
%38 = call i32 (i32*, i8*, ...) @fscanf(i32* %13, i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.13, i64 0, i64 0), float* %3, float* %4, float* %5, float* %6)
%39 = load float, float* %3
%40 = fpext float %39 to double
%41 = load float, float* %4
%42 = fpext float %41 to double
%43 = load float, float* %5
%44 = fpext float %43 to double
%45 = load float, float* %6
%46 = fpext float %45 to double
%47 = call double @betai(float %39, float %41, float %43)
%48 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @.str.14, i64 0, i64 0), double %40, double %42, double %44, double %46, double %47)
%49 = add nuw nsw i32 %37, 1
%50 = load i32, i32* %2
%51 = icmp slt i32 %37, %50
br i1 %51, label %36, label %52
52: ; preds = %36, %30
%53 = call i32 @fclose(i32* %13)
ret i32 0
}