// File: /workspace/github_c_makefile_star2_O2/georgeweigt[P]eigenmath/eigenmath.c
// Function: tanfunc
void
tanfunc(void)
{
	int i, n;
	double d;
	struct atom *p1, *p2;

	p1 = pop();

	if (istensor(p1)) {
		p1 = copy_tensor(p1);
		n = p1->u.tensor->nelem;
		for (i = 0; i < n; i++) {
			push(p1->u.tensor->elem[i]);
			tanfunc();
			p1->u.tensor->elem[i] = pop();
		}
		push(p1);
		return;
	}

	if (isdouble(p1)) {
		push(p1);
		d = pop_double();
		d = tan(d);
		push_double(d);
		return;
	}

	if (isdoublez(p1)) {
		push(p1);
		sinfunc();
		push(p1);
		cosfunc();
		divide();
		return;
	}

	// tan(-x) = -tan(x)

	if (isnegativeterm(p1)) {
		push(p1);
		negate();
		tanfunc();
		negate();
		return;
	}

	if (car(p1) == symbol(ADD)) {
		tanfunc_sum(p1);
		return;
	}

	if (car(p1) == symbol(ARCTAN)) {
		push(cadr(p1));
		push(caddr(p1));
		divide();
		return;
	}

	// n pi ?

	push(p1);
	push_symbol(PI);
	divide();
	p2 = pop();

	if (!isnum(p2)) {
		push_symbol(TAN);
		push(p1);
		list(2);
		return;
	}

	if (isdouble(p2)) {
		push(p2);
		d = pop_double();
		d = tan(d * M_PI);
		push_double(d);
		return;
	}

	push(p2); // nonnegative by tan(-x) = -tan(x) above
	push_integer(180);
	multiply();
	p2 = pop();

	if (!isinteger(p2)) {
		push_symbol(TAN);
		push(p1);
		list(2);
		return;
	}

	push(p2);
	push_integer(360);
	modfunc();
	n = pop_integer();

	switch (n) {
	case 0:
	case 180:
		push_integer(0);
		break;
	case 30:
	case 210:
		push_rational(1, 3);
		push_integer(3);
		push_rational(1, 2);
		power();
		multiply();
		break;
	case 150:
	case 330:
		push_rational(-1, 3);
		push_integer(3);
		push_rational(1, 2);
		power();
		multiply();
		break;
	case 45:
	case 225:
		push_integer(1);
		break;
	case 135:
	case 315:
		push_integer(-1);
		break;
	case 60:
	case 240:
		push_integer(3);
		push_rational(1, 2);
		power();
		break;
	case 120:
	case 300:
		push_integer(3);
		push_rational(1, 2);
		power();
		negate();
		break;
	default:
		push_symbol(TAN);
		push(p1);
		list(2);
		break;
	}
}

// Assembly:
pushq %rbp
movq %rsp, %rbp
pushq %r15
pushq %r14
pushq %r12
pushq %rbx
callq 0x868d
movq %rax, %rbx
movzbl 0x10(%rax), %r15d
cmpl $0x5, %r15d
je 0x1c699
cmpl $0x7, %r15d
jne 0x1c6b8
movq %rbx, %rdi
callq 0x8f1b
movq %rax, %rbx
movq (%rax), %rax
movl 0x64(%rax), %r14d
xorl %r15d, %r15d
testl %r14d, %r14d
cmovlel %r15d, %r14d
cmpq %r15, %r14
je 0x1c689
movq (%rbx), %rax
movq 0x68(%rax,%r15,8), %rdi
callq 0x861b
callq 0x1c620
callq 0x868d
movq (%rbx), %rcx
movq %rax, 0x68(%rcx,%r15,8)
incq %r15
jmp 0x1c660
movq %rbx, %rdi
popq %rbx
popq %r12
popq %r14
popq %r15
popq %rbp
jmp 0x861b
movq %rbx, %rdi
callq 0x861b
callq 0x8ae1
callq 0x7280
popq %rbx
popq %r12
popq %r14
popq %r15
popq %rbp
jmp 0xaf59
movq %rbx, %rdi
callq 0xb876
movq %rbx, %rdi
testl %eax, %eax
je 0x1c6eb
callq 0x861b
callq 0xe75b
movq %rbx, %rdi
callq 0x861b
callq 0xe086
popq %rbx
popq %r12
popq %r14
popq %r15
popq %rbp
jmp 0xca0b
callq 0x9fd6
testl %eax, %eax
je 0x1c713
movq %rbx, %rdi
callq 0x861b
callq 0x975f
callq 0x1c620
popq %rbx
popq %r12
popq %r14
popq %r15
popq %rbp
jmp 0x975f
cmpb $0x1, %r15b
leaq 0x222d2(%rip), %r14     # 0x3e9f0
movq %r14, %rax
cmoveq %rbx, %rax
movq (%rax), %rax
cmpq 0x24b61(%rip), %rax     # 0x41290
je 0x1c78b
cmpq 0x1fa50(%rip), %rax     # 0x3c188
je 0x1c79b
movq %rbx, %rdi
callq 0x861b
movq 0x228f7(%rip), %rdi     # 0x3f040
callq 0x861b
callq 0xca0b
callq 0x868d
movb 0x10(%rax), %r14b
movl %r14d, %ecx
andb $-0x2, %cl
cmpb $0x4, %cl
jne 0x1c8ba
movq %rax, %rdi
callq 0x861b
cmpb $0x5, %r14b
jne 0x1c7f5
callq 0x8ae1
mulsd 0x69b2(%rip), %xmm0     # 0x23138
jmp 0x1c6a6
movq %rbx, %rdi
popq %rbx
popq %r12
popq %r14
popq %r15
popq %rbp
jmp 0x1c980
movq %rbx, %r12
addq $0x8, %r12
cmpb $0x1, %r15b
movq %r14, %rax
cmoveq %r12, %rax
movq (%rax), %rax
cmpb $0x1, 0x10(%rax)
cmovneq %r14, %rax
movq (%rax), %rdi
callq 0x861b
cmpb $0x1, 0x10(%rbx)
cmovneq %r14, %r12
movq (%r12), %rax
cmpb $0x1, 0x10(%rax)
jne 0x1c7d8
movq 0x8(%rax), %rax
jmp 0x1c7df
movq 0x22211(%rip), %rax     # 0x3e9f0
cmpb $0x1, 0x10(%rax)
jne 0x1c7e8
movq %rax, %r14
movq (%r14), %rdi
callq 0x861b
jmp 0x1c6de
movl $0xb4, %edi
callq 0xa426
callq 0x9fae
callq 0x868d
movq %rax, %r14
movq %rax, %rdi
callq 0x8b5d
testl %eax, %eax
je 0x1c8ba
movq %r14, %rdi
callq 0x861b
movl $0x168, %edi            # imm = 0x168
callq 0xa426
callq 0xe617
callq 0xd9d9
testl %eax, %eax
je 0x1c8b3
cmpl $0x1e, %eax
je 0x1c917
cmpl $0x2d, %eax
je 0x1c970
cmpl $0x3c, %eax
je 0x1c950
cmpl $0x78, %eax
je 0x1c8fa
cmpl $0x87, %eax
je 0x1c94c
cmpl $0x96, %eax
je 0x1c8de
cmpl $0x14a, %eax            # imm = 0x14A
je 0x1c8de
cmpl $0xd2, %eax
je 0x1c917
cmpl $0xe1, %eax
je 0x1c970
cmpl $0xf0, %eax
je 0x1c950
cmpl $0x12c, %eax            # imm = 0x12C
je 0x1c8fa
cmpl $0x13b, %eax            # imm = 0x13B
je 0x1c94c
cmpl $0xb4, %eax
jne 0x1c8ba
xorl %edi, %edi
jmp 0x1c973
movq 0x233ff(%rip), %rdi     # 0x3fcc0
callq 0x861b
movq %rbx, %rdi
callq 0x861b
pushq $0x2
popq %rdi
popq %rbx
popq %r12
popq %r14
popq %r15
popq %rbp
jmp 0x85eb
pushq $-0x1
popq %rdi
pushq $0x3
popq %rbx
movl %ebx, %esi
callq 0x9a47
movl %ebx, %edi
callq 0xa426
pushq $0x1
popq %rdi
pushq $0x2
popq %rsi
jmp 0x1c935
pushq $0x3
popq %rdi
callq 0xa426
pushq $0x1
popq %rdi
pushq $0x2
popq %rsi
callq 0x9a47
callq 0x9a87
jmp 0x1c706
pushq $0x1
popq %rbx
pushq $0x3
popq %r14
movl %ebx, %edi
movl %r14d, %esi
callq 0x9a47
movl %r14d, %edi
callq 0xa426
pushq $0x2
popq %rsi
movl %ebx, %edi
callq 0x9a47
callq 0x9a87
popq %rbx
popq %r12
popq %r14
popq %r15
popq %rbp
jmp 0x9fae
pushq $-0x1
jmp 0x1c972
pushq $0x3
popq %rdi
callq 0xa426
pushq $0x1
popq %rdi
pushq $0x2
popq %rsi
callq 0x9a47
popq %rbx
popq %r12
popq %r14
popq %r15
popq %rbp
jmp 0x9a87
pushq $0x1
popq %rdi
popq %rbx
popq %r12
popq %r14
popq %r15
popq %rbp
jmp 0xa426