} else {
if (cln::zerop(r)) {
// case 2, imaginary: y*I or -y*I
- if ((precedence() <= level) && (i < 0)) {
- if (i == -1) {
- c.s << par_open+imag_sym+par_close;
- } else {
+ if (i==1)
+ c.s << imag_sym;
+ else {
+ if (precedence()<=level)
c.s << par_open;
+ if (i == -1)
+ c.s << "-" << imag_sym;
+ else {
print_real_number(c, i);
- c.s << mul_sym+imag_sym+par_close;
- }
- } else {
- if (i == 1) {
- c.s << imag_sym;
- } else {
- if (i == -1) {
- c.s << "-" << imag_sym;
- } else {
- print_real_number(c, i);
- c.s << mul_sym+imag_sym;
- }
+ c.s << mul_sym+imag_sym;
}
+ if (precedence()<=level)
+ c.s << par_close;
}
} else {
// case 3, complex: x+y*I or x-y*I or -x+y*I or -x-y*I
return false;
}
+int numeric::degree(const ex & s) const
+{
+ return 0;
+}
+
+int numeric::ldegree(const ex & s) const
+{
+ return 0;
+}
+
+ex numeric::coeff(const ex & s, int n) const
+{
+ return n==0 ? *this : _ex0;
+}
+
/** Disassemble real part and imaginary part to scan for the occurrence of a
* single number. Also handles the imaginary unit. It ignores the sign on
* both this and the argument, which may lead to what might appear as funny
// algorithm not applicable to B(2), so just store it
if (!next_r) {
- results.push_back(); // results[0] is not used
results.push_back(cln::recip(cln::cl_RA(6)));
next_r = 4;
}
if (n<next_r)
- return results[n/2];
+ return results[n/2-1];
- results.reserve(n/2 + 1);
+ results.reserve(n/2);
for (unsigned p=next_r; p<=n; p+=2) {
cln::cl_I c = 1; // seed for binonmial coefficients
cln::cl_RA b = cln::cl_RA(1-p)/2;
if (p < (1UL<<cl_value_len/2)) {
for (i=2, k=1, p_2=p/2; i<=pm; i+=2, ++k, --p_2) {
c = cln::exquo(c * ((p3-i) * p_2), (i-1)*k);
- b = b + c*results[k];
+ b = b + c*results[k-1];
}
} else {
for (i=2, k=1, p_2=p/2; i<=pm; i+=2, ++k, --p_2) {
c = cln::exquo((c * (p3-i)) * p_2, cln::cl_I(i-1)*k);
- b = b + c*results[k];
+ b = b + c*results[k-1];
}
}
results.push_back(-b/(p+1));
}
next_r = n+2;
- return results[n/2];
+ return results[n/2-1];
}