#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*/ *);
scalar_t__ feof(int /*<<< orphan*/ *);
int /*<<< orphan*/ fgets(char *, int, int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fscanf(int /*<<< orphan*/ *, char *, ...);
double gammln(float);
int /*<<< orphan*/ gser(float *, float, float, float *);
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, gamser, gln, val, x;
  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 Gamma Function", 25)) {
    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("%4s %11s %14s %14s %12s %8s\n", "a", "x", "actual", "gser(a,x)",
         "gammln(a)", "gln");
  for (i = 1; i <= nval; i++) {
    fscanf(fp, "%f %f %f", &a, &x, &val);
    gser(&gamser, a, x, &gln);
    printf("%6.2f %12.6f %12.6f %12.6f %12.6f %12.6f\n", a, x, val, gamser,
           gammln(a), gln);
  }
  fclose(fp);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0xb0,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xe47(%rip),%rdi
lea    0xe4b(%rip),%rsi
call   10b0 <fopen@plt>
mov    %rax,-0x88(%rbp)
cmp    $0x0,%rax
jne    11e2 <main+0x42>
lea    0xe30(%rip),%rdi
call   1040 <nrerror@plt>
lea    -0x60(%rbp),%rdi
mov    -0x88(%rbp),%rdx
mov    $0x50,%esi
call   1080 <fgets@plt>
lea    -0x60(%rbp),%rdi
lea    0xe2b(%rip),%rsi
mov    $0x19,%edx
call   1030 <strncmp@plt>
cmp    $0x0,%rax
je     1252 <main+0xb2>
lea    -0x60(%rbp),%rdi
mov    -0x88(%rbp),%rdx
mov    $0x50,%esi
call   1080 <fgets@plt>
mov    -0x88(%rbp),%rdi
call   1090 <feof@plt>
cmp    $0x0,%rax
je     124d <main+0xad>
lea    0xdff(%rip),%rdi
call   1040 <nrerror@plt>
jmp    11f7 <main+0x57>
mov    -0x88(%rbp),%rdi
lea    0xe05(%rip),%rsi
lea    -0x68(%rbp),%rdx
mov    $0x0,%al
call   1070 <fscanf@plt>
lea    -0x60(%rbp),%rsi
lea    0xdf6(%rip),%rdi
mov    $0x0,%al
call   1060 <printf@plt>
lea    0xded(%rip),%rdi
lea    0xe03(%rip),%rsi
lea    0xdfe(%rip),%rdx
lea    0xdf9(%rip),%rcx
lea    0xdf9(%rip),%r8
lea    0xdfc(%rip),%r9
lea    0xdff(%rip),%rax
mov    %rax,(%rsp)
mov    $0x0,%al
call   1060 <printf@plt>
movl   $0x1,-0x64(%rbp)
mov    -0x64(%rbp),%eax
cmp    -0x68(%rbp),%eax
jg     139a <main+0x1fa>
mov    -0x88(%rbp),%rdi
lea    0xdd7(%rip),%rsi
lea    -0x6c(%rbp),%rdx
lea    -0x7c(%rbp),%rcx
lea    -0x78(%rbp),%r8
mov    $0x0,%al
call   1070 <fscanf@plt>
movss  -0x6c(%rbp),%xmm0
movss  -0x7c(%rbp),%xmm1
lea    -0x70(%rbp),%rdi
lea    -0x74(%rbp),%rsi
call   10a0 <gser@plt>
movss  -0x6c(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  %xmm0,-0x90(%rbp)
ff
movss  -0x7c(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  %xmm0,-0xa8(%rbp)
ff
movss  -0x78(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  %xmm0,-0xa0(%rbp)
ff
movss  -0x70(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  %xmm0,-0x98(%rbp)
ff
movss  -0x6c(%rbp),%xmm0
call   10c0 <gammln@plt>
movsd  -0xa8(%rbp),%xmm1
ff
movsd  -0xa0(%rbp),%xmm2
ff
movsd  -0x98(%rbp),%xmm3
ff
movaps %xmm0,%xmm4
movsd  -0x90(%rbp),%xmm0
ff
movss  -0x74(%rbp),%xmm5
cvtss2sd %xmm5,%xmm5
lea    0xd35(%rip),%rdi
mov    $0x6,%al
call   1060 <printf@plt>
mov    -0x64(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x64(%rbp)
jmp    12c0 <main+0x120>
mov    -0x88(%rbp),%rdi
call   1050 <fclose@plt>
xor    %eax,%eax
add    $0xb0,%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    0xe48(%rip),%rdi
lea    0xe4c(%rip),%rsi
call   10b0 <fopen@plt>
mov    %rax,%rbx
test   %rax,%rax
jne    11d8 <main+0x38>
lea    0xe3a(%rip),%rdi
call   1040 <nrerror@plt>
lea    0x40(%rsp),%rbp
mov    %rbp,%rdi
mov    $0x50,%esi
mov    %rbx,%rdx
call   1080 <fgets@plt>
lea    0xe39(%rip),%rsi
mov    %rbp,%rdi
mov    $0x19,%edx
call   1030 <strncmp@plt>
test   %rax,%rax
je     125c <main+0xbc>
lea    0x40(%rsp),%rbp
lea    0xe1b(%rip),%r14
lea    0xe2e(%rip),%r15
jmp    1235 <main+0x95>
nopl   0x0(%rax,%rax,1)
mov    %rbp,%rdi
mov    %r14,%rsi
mov    $0x19,%edx
call   1030 <strncmp@plt>
test   %rax,%rax
je     125c <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     1220 <main+0x80>
mov    %r15,%rdi
call   1040 <nrerror@plt>
jmp    1220 <main+0x80>
lea    0xe02(%rip),%rsi
lea    0x10(%rsp),%rdx
mov    %rbx,%rdi
xor    %eax,%eax
call   1070 <fscanf@plt>
lea    0xdf3(%rip),%rdi
lea    0x40(%rsp),%rsi
xor    %eax,%eax
call   1060 <printf@plt>
lea    0xe21(%rip),%rax
mov    %rax,(%rsp)
lea    0xdda(%rip),%rdi
lea    0xdf0(%rip),%rsi
lea    0xdeb(%rip),%rdx
lea    0xde6(%rip),%rcx
lea    0xde6(%rip),%r8
lea    0xde9(%rip),%r9
xor    %eax,%eax
call   1060 <printf@plt>
cmpl   $0x0,0x10(%rsp)
jle    13ae <main+0x20e>
lea    0x14(%rsp),%r13
lea    0x1c(%rsp),%rbp
lea    0x18(%rsp),%r14
lea    0xdd8(%rip),%r15
xor    %r12d,%r12d
cs nopw 0x0(%rax,%rax,1)
nop
mov    %rbx,%rdi
lea    0xdb7(%rip),%rsi
lea    0xc(%rsp),%rdx
lea    0x8(%rsp),%rcx
mov    %r13,%r8
xor    %eax,%eax
call   1070 <fscanf@plt>
movss  0xc(%rsp),%xmm0
movss  0x8(%rsp),%xmm1
mov    %rbp,%rdi
mov    %r14,%rsi
call   10a0 <gser@plt>
movss  0xc(%rsp),%xmm0
xorps  %xmm1,%xmm1
cvtss2sd %xmm0,%xmm1
movsd  %xmm1,0x38(%rsp)
movss  0x8(%rsp),%xmm1
cvtss2sd %xmm1,%xmm1
movsd  %xmm1,0x30(%rsp)
movss  0x14(%rsp),%xmm1
cvtss2sd %xmm1,%xmm1
movsd  %xmm1,0x28(%rsp)
movss  0x1c(%rsp),%xmm1
cvtss2sd %xmm1,%xmm1
movsd  %xmm1,0x20(%rsp)
call   10c0 <gammln@plt>
movaps %xmm0,%xmm4
movss  0x18(%rsp),%xmm0
xorps  %xmm5,%xmm5
cvtss2sd %xmm0,%xmm5
mov    %r15,%rdi
movsd  0x38(%rsp),%xmm0
movsd  0x30(%rsp),%xmm1
movsd  0x28(%rsp),%xmm2
movsd  0x20(%rsp),%xmm3
mov    $0x6,%al
call   1060 <printf@plt>
add    $0x1,%r12d
cmp    0x10(%rsp),%r12d
jl     12f0 <main+0x150>
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 = [26 x i8] c"Incomplete Gamma 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 = [29 x i8] c"%4s %11s %14s %14s %12s %8s\0A\00"
@.str.8 = [2 x i8] c"a\00"
@.str.9 = [2 x i8] c"x\00"
@.str.10 = [7 x i8] c"actual\00"
@.str.11 = [10 x i8] c"gser(a,x)\00"
@.str.12 = [10 x i8] c"gammln(a)\00"
@.str.13 = [4 x i8] c"gln\00"
@.str.14 = [9 x i8] c"%f %f %f\00"
@.str.15 = [42 x i8] c"%6.2f %12.6f %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 float
%10 = alloca i32*
store i32 0, i32* %1
%11 = 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* %11, i32** %10
%12 = icmp eq i32* %11, null
br i1 %12, label %13, label %15
13: ; preds = %0
%14 = call i32 @nrerror(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str.2, i64 0, i64 0))
br label %15
15: ; preds = %13, %0
%16 = getelementptr inbounds [80 x i8], [80 x i8]* %2, i64 0, i64 0
%17 = load i32*, i32** %10
%18 = call i32 @fgets(i8* %16, i32 80, i32* %17)
br label %19
19: ; preds = %32, %15
%20 = getelementptr inbounds [80 x i8], [80 x i8]* %2, i64 0, i64 0
%21 = call i64 @strncmp(i8* %20, i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.3, i64 0, i64 0), i32 25)
%22 = icmp ne i64 %21, 0
br i1 %22, label %23, label %33
23: ; preds = %19
%24 = getelementptr inbounds [80 x i8], [80 x i8]* %2, i64 0, i64 0
%25 = load i32*, i32** %10
%26 = call i32 @fgets(i8* %24, i32 80, i32* %25)
%27 = load i32*, i32** %10
%28 = call i64 @feof(i32* %27)
%29 = icmp ne i64 %28, 0
br i1 %29, label %30, label %32
30: ; preds = %23
%31 = call i32 @nrerror(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.4, i64 0, i64 0))
br label %32
32: ; preds = %30, %23
br label %19
33: ; preds = %19
%34 = load i32*, i32** %10
%35 = call i32 (i32*, i8*, ...) @fscanf(i32* %34, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.5, i64 0, i64 0), i32* %4)
%36 = getelementptr inbounds [80 x i8], [80 x i8]* %2, i64 0, i64 0
%37 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.6, i64 0, i64 0), i8* %36)
%38 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 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 ([7 x i8], [7 x i8]* @.str.10, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.11, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.12, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.13, i64 0, i64 0))
store i32 1, i32* %3
br label %39
39: ; preds = %62, %33
%40 = load i32, i32* %3
%41 = load i32, i32* %4
%42 = icmp sle i32 %40, %41
br i1 %42, label %43, label %65
43: ; preds = %39
%44 = load i32*, i32** %10
%45 = call i32 (i32*, i8*, ...) @fscanf(i32* %44, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.14, i64 0, i64 0), float* %5, float* %9, float* %8)
%46 = load float, float* %5
%47 = load float, float* %9
%48 = call i32 @gser(float* %6, float %46, float %47, float* %7)
%49 = load float, float* %5
%50 = fpext float %49 to double
%51 = load float, float* %9
%52 = fpext float %51 to double
%53 = load float, float* %8
%54 = fpext float %53 to double
%55 = load float, float* %6
%56 = fpext float %55 to double
%57 = load float, float* %5
%58 = call double @gammln(float %57)
%59 = load float, float* %7
%60 = fpext float %59 to double
%61 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([42 x i8], [42 x i8]* @.str.15, i64 0, i64 0), double %50, double %52, double %54, double %56, double %58, double %60)
br label %62
62: ; preds = %43
%63 = load i32, i32* %3
%64 = add nsw i32 %63, 1
store i32 %64, i32* %3
br label %39
65: ; preds = %39
%66 = load i32*, i32** %10
%67 = call i32 @fclose(i32* %66)
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 = [26 x i8] c"Incomplete Gamma 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 = [29 x i8] c"%4s %11s %14s %14s %12s %8s\0A\00"
@.str.8 = [2 x i8] c"a\00"
@.str.9 = [2 x i8] c"x\00"
@.str.10 = [7 x i8] c"actual\00"
@.str.11 = [10 x i8] c"gser(a,x)\00"
@.str.12 = [10 x i8] c"gammln(a)\00"
@.str.13 = [4 x i8] c"gln\00"
@.str.14 = [9 x i8] c"%f %f %f\00"
@.str.15 = [42 x i8] c"%6.2f %12.6f %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 = alloca float
%8 = getelementptr inbounds [80 x i8], [80 x i8]* %1, i64 0, i64 0
%9 = bitcast i32* %2 to i8*
%10 = bitcast float* %3 to i8*
%11 = bitcast float* %4 to i8*
%12 = bitcast float* %5 to i8*
%13 = bitcast float* %6 to i8*
%14 = bitcast float* %7 to i8*
%15 = 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))
%16 = icmp eq i32* %15, null
br i1 %16, label %17, label %19
17: ; preds = %0
%18 = tail call i32 @nrerror(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str.2, i64 0, i64 0))
br label %19
19: ; preds = %17, %0
%20 = call i32 @fgets(i8* %8, i32 80, i32* %15)
%21 = call i64 @strncmp(i8* %8, i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.3, i64 0, i64 0), i32 25)
%22 = icmp eq i64 %21, 0
br i1 %22, label %32, label %23
23: ; preds = %19, %29
%24 = call i32 @fgets(i8* %8, i32 80, i32* %15)
%25 = call i64 @feof(i32* %15)
%26 = icmp eq i64 %25, 0
br i1 %26, label %29, label %27
27: ; preds = %23
%28 = call i32 @nrerror(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.4, i64 0, i64 0))
br label %29
29: ; preds = %27, %23
%30 = call i64 @strncmp(i8* %8, i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.3, i64 0, i64 0), i32 25)
%31 = icmp eq i64 %30, 0
br i1 %31, label %32, label %23
32: ; preds = %29, %19
%33 = call i32 (i32*, i8*, ...) @fscanf(i32* %15, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.5, i64 0, i64 0), i32* %2)
%34 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.6, i64 0, i64 0), i8* %8)
%35 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([29 x i8], [29 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 ([7 x i8], [7 x i8]* @.str.10, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.11, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.12, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.13, i64 0, i64 0))
%36 = load i32, i32* %2
%37 = icmp slt i32 %36, 1
br i1 %37, label %59, label %38
38: ; preds = %32, %38
%39 = phi i32 [ %56, %38 ], [ 1, %32 ]
%40 = call i32 (i32*, i8*, ...) @fscanf(i32* %15, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.14, i64 0, i64 0), float* %3, float* %7, float* %6)
%41 = load float, float* %3
%42 = load float, float* %7
%43 = call i32 @gser(float* %4, float %41, float %42, float* %5)
%44 = load float, float* %3
%45 = fpext float %44 to double
%46 = load float, float* %7
%47 = fpext float %46 to double
%48 = load float, float* %6
%49 = fpext float %48 to double
%50 = load float, float* %4
%51 = fpext float %50 to double
%52 = call double @gammln(float %44)
%53 = load float, float* %5
%54 = fpext float %53 to double
%55 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([42 x i8], [42 x i8]* @.str.15, i64 0, i64 0), double %45, double %47, double %49, double %51, double %52, double %54)
%56 = add nuw nsw i32 %39, 1
%57 = load i32, i32* %2
%58 = icmp slt i32 %39, %57
br i1 %58, label %38, label %59
59: ; preds = %38, %32
%60 = call i32 @fclose(i32* %15)
ret i32 0
}