(template parameter) type of real part of dual number
real part of complex number to be constructed
Dual instance with real and dual parts set to the values provided as input. If neither re nor du are floating-point numbers, the return type will be Dual!double. Otherwise, the return type is deduced using std.traits.CommonType!(R, D).
auto a = dual(1.0); static assert(is(typeof(a) == Dual!double)); assert(a.re == 1.0); assert(a.du == 0.0); auto b = dual(2.0L); static assert(is(typeof(b) == Dual!real)); assert(b.re == 2.0L); assert(b.du == 0.0L); auto c = dual(1.0, 2.0); static assert(is(typeof(c) == Dual!double)); assert(c.re == 1.0); assert(c.du == 2.0); auto d = dual(3.0, 4.0L); static assert(is(typeof(d) == Dual!real)); assert(d.re == 3.0); assert(d.du == 4.0L); auto e = dual(1); static assert(is(typeof(e) == Dual!double)); assert(e.re == 1); assert(e.du == 0); auto f = dual(1L, 2); static assert(is(typeof(f) == Dual!double)); assert(f.re == 1L); assert(f.du == 2); auto g = dual(3, 4.0L); static assert(is(typeof(g) == Dual!real)); assert(g.re == 3); assert(g.du == 4.0L);
Helper function that returns a dual number with the specified real and dual parts.