#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 */
double DEGTORAD(double);
double cos(double);
double sin(double);
void makeZRotMat(double mat[16], double angDeg) {
  double ang_rad = DEGTORAD(angDeg);
  double cos_ang = cos(ang_rad);
  double sin_ang = sin(ang_rad);
  mat[0] = cos_ang;
  mat[1] = sin_ang;
  mat[2] = 0.0;
  mat[3] = 0.0;
  mat[4] = -sin_ang;
  mat[5] = cos_ang;
  mat[6] = 0.0;
  mat[7] = 0.0;
  mat[8] = 0.0;
  mat[9] = 0.0;
  mat[10] = 1.0;
  mat[11] = 0.0;
  mat[12] = 0.0;
  mat[13] = 0.0;
  mat[14] = 0.0;
  mat[15] = 1.0;
}


x86 assembly (clang, -O0):
<makeZRotMat>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x8(%rbp)
movsd  %xmm0,-0x10(%rbp)
movsd  -0x10(%rbp),%xmm0
call   1050 <DEGTORAD@plt>
movsd  %xmm0,-0x18(%rbp)
movsd  -0x18(%rbp),%xmm0
call   1040 <cos@plt>
movsd  %xmm0,-0x20(%rbp)
movsd  -0x18(%rbp),%xmm0
call   1030 <sin@plt>
movsd  %xmm0,-0x28(%rbp)
movsd  -0x20(%rbp),%xmm0
mov    -0x8(%rbp),%rax
movsd  %xmm0,(%rax)
movsd  -0x28(%rbp),%xmm0
mov    -0x8(%rbp),%rax
movsd  %xmm0,0x8(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movsd  %xmm0,0x10(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movsd  %xmm0,0x18(%rax)
movsd  -0x28(%rbp),%xmm0
movq   %xmm0,%rax
movabs $0x8000000000000000,%rcx
xor    %rcx,%rax
movq   %rax,%xmm0
mov    -0x8(%rbp),%rax
movsd  %xmm0,0x20(%rax)
movsd  -0x20(%rbp),%xmm0
mov    -0x8(%rbp),%rax
movsd  %xmm0,0x28(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movsd  %xmm0,0x30(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movsd  %xmm0,0x38(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movsd  %xmm0,0x40(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movsd  %xmm0,0x48(%rax)
mov    -0x8(%rbp),%rax
movsd  0xdf0(%rip),%xmm0
movsd  %xmm0,0x50(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movsd  %xmm0,0x58(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movsd  %xmm0,0x60(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movsd  %xmm0,0x68(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movsd  %xmm0,0x70(%rax)
mov    -0x8(%rbp),%rax
movsd  0xdaf(%rip),%xmm0
movsd  %xmm0,0x78(%rax)
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<makeZRotMat>:
push   %rbx
sub    $0x10,%rsp
mov    %rdi,%rbx
call   1050 <DEGTORAD@plt>
movsd  %xmm0,(%rsp)
call   1040 <cos@plt>
movsd  %xmm0,0x8(%rsp)
movsd  (%rsp),%xmm0
call   1030 <sin@plt>
movsd  0x8(%rsp),%xmm2
movsd  %xmm2,(%rbx)
movsd  %xmm0,0x8(%rbx)
xorps  0xe93(%rip),%xmm0
xorps  %xmm1,%xmm1
movups %xmm1,0x10(%rbx)
movlps %xmm0,0x20(%rbx)
movsd  %xmm2,0x28(%rbx)
movups %xmm1,0x30(%rbx)
movups %xmm1,0x40(%rbx)
movabs $0x3ff0000000000000,%rax
mov    %rax,0x50(%rbx)
movups %xmm1,0x58(%rbx)
movups %xmm1,0x68(%rbx)
mov    %rax,0x78(%rbx)
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
define void @makeZRotMat(double* %0, double %1) {
%3 = alloca double*
%4 = alloca double
%5 = alloca double
%6 = alloca double
%7 = alloca double
store double* %0, double** %3
store double %1, double* %4
%8 = load double, double* %4
%9 = call double @DEGTORAD(double %8)
store double %9, double* %5
%10 = load double, double* %5
%11 = call double @cos(double %10)
store double %11, double* %6
%12 = load double, double* %5
%13 = call double @sin(double %12)
store double %13, double* %7
%14 = load double, double* %6
%15 = load double*, double** %3
%16 = getelementptr inbounds double, double* %15, i64 0
store double %14, double* %16
%17 = load double, double* %7
%18 = load double*, double** %3
%19 = getelementptr inbounds double, double* %18, i64 1
store double %17, double* %19
%20 = load double*, double** %3
%21 = getelementptr inbounds double, double* %20, i64 2
store double 0.000000e+00, double* %21
%22 = load double*, double** %3
%23 = getelementptr inbounds double, double* %22, i64 3
store double 0.000000e+00, double* %23
%24 = load double, double* %7
%25 = fneg double %24
%26 = load double*, double** %3
%27 = getelementptr inbounds double, double* %26, i64 4
store double %25, double* %27
%28 = load double, double* %6
%29 = load double*, double** %3
%30 = getelementptr inbounds double, double* %29, i64 5
store double %28, double* %30
%31 = load double*, double** %3
%32 = getelementptr inbounds double, double* %31, i64 6
store double 0.000000e+00, double* %32
%33 = load double*, double** %3
%34 = getelementptr inbounds double, double* %33, i64 7
store double 0.000000e+00, double* %34
%35 = load double*, double** %3
%36 = getelementptr inbounds double, double* %35, i64 8
store double 0.000000e+00, double* %36
%37 = load double*, double** %3
%38 = getelementptr inbounds double, double* %37, i64 9
store double 0.000000e+00, double* %38
%39 = load double*, double** %3
%40 = getelementptr inbounds double, double* %39, i64 10
store double 1.000000e+00, double* %40
%41 = load double*, double** %3
%42 = getelementptr inbounds double, double* %41, i64 11
store double 0.000000e+00, double* %42
%43 = load double*, double** %3
%44 = getelementptr inbounds double, double* %43, i64 12
store double 0.000000e+00, double* %44
%45 = load double*, double** %3
%46 = getelementptr inbounds double, double* %45, i64 13
store double 0.000000e+00, double* %46
%47 = load double*, double** %3
%48 = getelementptr inbounds double, double* %47, i64 14
store double 0.000000e+00, double* %48
%49 = load double*, double** %3
%50 = getelementptr inbounds double, double* %49, i64 15
store double 1.000000e+00, double* %50
ret void
}

LLVM IR (-O2):
define void @makeZRotMat(double* nocapture writeonly %0, double %1) {
%3 = tail call double @DEGTORAD(double %1)
%4 = tail call double @cos(double %3)
%5 = tail call double @sin(double %3)
store double %4, double* %0
%6 = getelementptr inbounds double, double* %0, i64 1
store double %5, double* %6
%7 = getelementptr inbounds double, double* %0, i64 2
%8 = fneg double %5
%9 = getelementptr inbounds double, double* %0, i64 4
%10 = bitcast double* %7 to i8*
store double %8, double* %9
%11 = getelementptr inbounds double, double* %0, i64 5
store double %4, double* %11
%12 = getelementptr inbounds double, double* %0, i64 6
%13 = getelementptr inbounds double, double* %0, i64 10
%14 = bitcast double* %12 to i8*
store double 1.000000e+00, double* %13
%15 = getelementptr inbounds double, double* %0, i64 11
%16 = getelementptr inbounds double, double* %0, i64 15
%17 = bitcast double* %15 to i8*
store double 1.000000e+00, double* %16
ret void
}