#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 */
int /*<<< orphan*/ gcf(float *, float, float, float *);
int /*<<< orphan*/ gser(float *, float, float, float *);
int /*<<< orphan*/ nrerror(char *);
float gammq(float a, float x) {
  float gamser, gammcf, gln;
  if (x < 0.0 || a <= 0.0)
    nrerror("Invalid arguments in routine gammq");
  if (x < (a + 1.0)) {
    gser(&gamser, a, x, &gln);
    return 1.0 - gamser;
  } else {
    gcf(&gammcf, a, x, &gln);
    return gammcf;
  }
}


x86 assembly (clang, -O0):
<gammq>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movss  %xmm0,-0x8(%rbp)
movss  %xmm1,-0xc(%rbp)
movss  -0xc(%rbp),%xmm0
cvtss2sd %xmm0,%xmm1
xorps  %xmm0,%xmm0
ucomisd %xmm1,%xmm0
ja     116e <gammq+0x3e>
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm1
xorps  %xmm0,%xmm0
ucomisd %xmm1,%xmm0
jb     117a <gammq+0x4a>
lea    0xe93(%rip),%rdi
call   1030 <nrerror@plt>
movss  -0xc(%rbp),%xmm0
cvtss2sd %xmm0,%xmm1
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  0xe6c(%rip),%xmm2
addsd  %xmm2,%xmm0
ucomisd %xmm1,%xmm0
jbe    11dc <gammq+0xac>
movss  -0x8(%rbp),%xmm0
movss  -0xc(%rbp),%xmm1
lea    -0x10(%rbp),%rdi
lea    -0x18(%rbp),%rsi
call   1040 <gser@plt>
movss  -0x10(%rbp),%xmm0
cvtss2sd %xmm0,%xmm1
movsd  0xe36(%rip),%xmm0
subsd  %xmm1,%xmm0
cvtsd2ss %xmm0,%xmm0
movss  %xmm0,-0x4(%rbp)
jmp    11fd <gammq+0xcd>
movss  -0x8(%rbp),%xmm0
movss  -0xc(%rbp),%xmm1
lea    -0x14(%rbp),%rdi
lea    -0x18(%rbp),%rsi
call   1050 <gcf@plt>
movss  -0x14(%rbp),%xmm0
movss  %xmm0,-0x4(%rbp)
movss  -0x4(%rbp),%xmm0
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<gammq>:
sub    $0x28,%rsp
cvtss2sd %xmm1,%xmm3
xorps  %xmm2,%xmm2
ucomiss %xmm0,%xmm2
jae    1145 <gammq+0x15>
ucomiss %xmm1,%xmm2
jbe    1175 <gammq+0x45>
lea    0xec0(%rip),%rdi
movss  %xmm1,0x10(%rsp)
movss  %xmm0,0xc(%rsp)
movsd  %xmm3,0x20(%rsp)
call   1030 <nrerror@plt>
movsd  0x20(%rsp),%xmm3
movss  0xc(%rsp),%xmm0
movss  0x10(%rsp),%xmm1
xorps  %xmm2,%xmm2
cvtss2sd %xmm0,%xmm2
addsd  0xe7c(%rip),%xmm2
ucomisd %xmm3,%xmm2
jbe    11ac <gammq+0x7c>
lea    0x1c(%rsp),%rdi
lea    0x14(%rsp),%rsi
call   1040 <gser@plt>
movss  0xe67(%rip),%xmm0
subss  0x1c(%rsp),%xmm0
add    $0x28,%rsp
ret
lea    0x18(%rsp),%rdi
lea    0x14(%rsp),%rsi
call   1050 <gcf@plt>
movss  0x18(%rsp),%xmm0
add    $0x28,%rsp
ret

LLVM IR (-O0):
@.str = [35 x i8] c"Invalid arguments in routine gammq\00"
define float @gammq(float %0, float %1) {
%3 = alloca float
%4 = alloca float
%5 = alloca float
%6 = alloca float
%7 = alloca float
%8 = alloca float
store float %0, float* %4
store float %1, float* %5
%9 = load float, float* %5
%10 = fpext float %9 to double
%11 = fcmp olt double %10, 0.000000e+00
br i1 %11, label %16, label %12
12: ; preds = %2
%13 = load float, float* %4
%14 = fpext float %13 to double
%15 = fcmp ole double %14, 0.000000e+00
br i1 %15, label %16, label %18
16: ; preds = %12, %2
%17 = call i32 @nrerror(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str, i64 0, i64 0))
br label %18
18: ; preds = %16, %12
%19 = load float, float* %5
%20 = fpext float %19 to double
%21 = load float, float* %4
%22 = fpext float %21 to double
%23 = fadd double %22, 1.000000e+00
%24 = fcmp olt double %20, %23
br i1 %24, label %25, label %33
25: ; preds = %18
%26 = load float, float* %4
%27 = load float, float* %5
%28 = call i32 @gser(float* %6, float %26, float %27, float* %8)
%29 = load float, float* %6
%30 = fpext float %29 to double
%31 = fsub double 1.000000e+00, %30
%32 = fptrunc double %31 to float
store float %32, float* %3
br label %38
33: ; preds = %18
%34 = load float, float* %4
%35 = load float, float* %5
%36 = call i32 @gcf(float* %7, float %34, float %35, float* %8)
%37 = load float, float* %7
store float %37, float* %3
br label %38
38: ; preds = %33, %25
%39 = load float, float* %3
ret float %39
}

LLVM IR (-O2):
@.str = [35 x i8] c"Invalid arguments in routine gammq\00"
define float @gammq(float %0, float %1) {
%3 = alloca float
%4 = alloca float
%5 = alloca float
%6 = bitcast float* %3 to i8*
%7 = bitcast float* %4 to i8*
%8 = bitcast float* %5 to i8*
%9 = fpext float %1 to double
%10 = fcmp uge float %1, 0.000000e+00
%11 = fcmp ugt float %0, 0.000000e+00
%12 = and i1 %11, %10
br i1 %12, label %15, label %13
13: ; preds = %2
%14 = tail call i32 @nrerror(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str, i64 0, i64 0))
br label %15
15: ; preds = %2, %13
%16 = fpext float %0 to double
%17 = fadd double %16, 1.000000e+00
%18 = fcmp ogt double %17, %9
br i1 %18, label %19, label %23
19: ; preds = %15
%20 = call i32 @gser(float* %3, float %0, float %1, float* %5)
%21 = load float, float* %3
%22 = fsub float 1.000000e+00, %21
br label %26
23: ; preds = %15
%24 = call i32 @gcf(float* %4, float %0, float %1, float* %5)
%25 = load float, float* %4
br label %26
26: ; preds = %23, %19
%27 = phi float [ %22, %19 ], [ %25, %23 ]
ret float %27
}