140 lines
1.8 KiB
C++
140 lines
1.8 KiB
C++
// Change circular functions to exponentials
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#include "stdafx.h"
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#include "defs.h"
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void
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eval_circexp(void)
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{
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push(cadr(p1));
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eval();
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circexp();
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// normalize
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eval();
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}
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void
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circexp(void)
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{
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int i, h;
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save();
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p1 = pop();
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if (car(p1) == symbol(COS)) {
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push(cadr(p1));
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expcos();
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restore();
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return;
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}
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if (car(p1) == symbol(SIN)) {
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push(cadr(p1));
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expsin();
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restore();
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return;
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}
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if (car(p1) == symbol(TAN)) {
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p1 = cadr(p1);
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push(imaginaryunit);
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push(p1);
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multiply();
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exponential();
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p2 = pop();
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push(imaginaryunit);
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push(p1);
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multiply();
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negate();
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exponential();
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p3 = pop();
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push(p3);
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push(p2);
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subtract();
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push(imaginaryunit);
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multiply();
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push(p2);
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push(p3);
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add();
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divide();
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restore();
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return;
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}
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if (car(p1) == symbol(COSH)) {
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p1 = cadr(p1);
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push(p1);
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exponential();
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push(p1);
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negate();
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exponential();
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add();
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push_rational(1, 2);
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multiply();
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restore();
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return;
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}
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if (car(p1) == symbol(SINH)) {
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p1 = cadr(p1);
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push(p1);
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exponential();
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push(p1);
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negate();
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exponential();
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subtract();
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push_rational(1, 2);
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multiply();
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restore();
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return;
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}
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if (car(p1) == symbol(TANH)) {
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p1 = cadr(p1);
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push(p1);
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push_integer(2);
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multiply();
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exponential();
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p1 = pop();
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push(p1);
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push_integer(1);
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subtract();
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push(p1);
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push_integer(1);
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add();
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divide();
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restore();
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return;
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}
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if (iscons(p1)) {
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h = tos;
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while (iscons(p1)) {
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push(car(p1));
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circexp();
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p1 = cdr(p1);
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}
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list(tos - h);
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restore();
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return;
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}
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if (p1->k == TENSOR) {
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push(p1);
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copy_tensor();
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p1 = pop();
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for (i = 0; i < p1->u.tensor->nelem; i++) {
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push(p1->u.tensor->elem[i]);
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circexp();
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p1->u.tensor->elem[i] = pop();
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}
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push(p1);
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restore();
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return;
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}
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push(p1);
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restore();
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} |