#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*/ printf(char *);
float gammq(float a, float x) {
  void gcf(float *gammcf, float a, float x, float *gln);
  void gser(float *gamser, float a, float x, float *gln);
  float gamser, gammcf, gln;
  if (x < 0.0 || a <= 0.0) {
    printf("Error(gammq):invalid arguments\n");
    return (0);
  }
  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     1187 <gammq+0x57>
lea    0xe93(%rip),%rdi
call   1030 <printf@plt>
xorps  %xmm0,%xmm0
movss  %xmm0,-0x4(%rbp)
jmp    120a <gammq+0xda>
movss  -0xc(%rbp),%xmm0
cvtss2sd %xmm0,%xmm1
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  0xe5f(%rip),%xmm2
addsd  %xmm2,%xmm0
ucomisd %xmm1,%xmm0
jbe    11e9 <gammq+0xb9>
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  0xe29(%rip),%xmm0
subsd  %xmm1,%xmm0
cvtsd2ss %xmm0,%xmm0
movss  %xmm0,-0x4(%rbp)
jmp    120a <gammq+0xda>
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    $0x18,%rsp
xorps  %xmm2,%xmm2
ucomiss %xmm0,%xmm2
jae    117f <gammq+0x4f>
xorps  %xmm2,%xmm2
ucomiss %xmm1,%xmm2
ja     117f <gammq+0x4f>
xorps  %xmm2,%xmm2
cvtss2sd %xmm1,%xmm2
cvtss2sd %xmm0,%xmm3
addsd  0xea9(%rip),%xmm3
ucomisd %xmm2,%xmm3
jbe    1193 <gammq+0x63>
lea    0x14(%rsp),%rdi
lea    0xc(%rsp),%rsi
call   1040 <gser@plt>
movss  0xe94(%rip),%xmm0
subss  0x14(%rsp),%xmm0
add    $0x18,%rsp
ret
lea    0xe86(%rip),%rdi
call   1030 <puts@plt>
xorps  %xmm0,%xmm0
add    $0x18,%rsp
ret
lea    0x10(%rsp),%rdi
lea    0xc(%rsp),%rsi
call   1050 <gcf@plt>
movss  0x10(%rsp),%xmm0
add    $0x18,%rsp
ret

LLVM IR (-O0):
@.str = [32 x i8] c"Error(gammq):invalid arguments\0A\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 @printf(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str, i64 0, i64 0))
store float 0.000000e+00, float* %3
br label %36
18: ; preds = %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 %32
25: ; preds = %18
%26 = load float, float* %4
%27 = load float, float* %5
%28 = load float, float* %6
%29 = fpext float %28 to double
%30 = fsub double 1.000000e+00, %29
%31 = fptrunc double %30 to float
store float %31, float* %3
br label %36
32: ; preds = %18
%33 = load float, float* %4
%34 = load float, float* %5
%35 = load float, float* %7
store float %35, float* %3
br label %36
36: ; preds = %32, %25, %16
%37 = load float, float* %3
ret float %37
}

LLVM IR (-O2):
@str = [31 x i8] c"Error(gammq):invalid arguments\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 = fcmp uge float %1, 0.000000e+00
%10 = fcmp ugt float %0, 0.000000e+00
%11 = and i1 %10, %9
br i1 %11, label %14, label %12
12: ; preds = %2
%13 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([31 x i8], [31 x i8]* @str, i64 0, i64 0))
br label %24
14: ; preds = %2
%15 = fpext float %1 to double
%16 = fpext float %0 to double
%17 = fadd double %16, 1.000000e+00
%18 = fcmp ogt double %17, %15
br i1 %18, label %19, label %22
19: ; preds = %14
%20 = load float, float* %3
%21 = fsub float 1.000000e+00, %20
br label %24
22: ; preds = %14
%23 = load float, float* %4
br label %24
24: ; preds = %22, %19, %12
%25 = phi float [ 0.000000e+00, %12 ], [ %21, %19 ], [ %23, %22 ]
ret float %25
}