smul: function()

in src/fp48.js [441:547]
90 lines of code
2 McCabe index (conditional complexity)

	smul: function(y) {
			if (ctx.ECP.SEXTIC_TWIST==ctx.ECP.D_TYPE)
			{	
				var w1=new ctx.FP8(this.a.geta());
				var w2=new ctx.FP8(this.a.getb());
				var w3=new ctx.FP8(this.b.geta());

				w1.mul(y.a.geta());
				w2.mul(y.a.getb());
				w3.mul(y.b.geta());

				var ta=new ctx.FP8(this.a.geta());
				var tb=new ctx.FP8(y.a.geta());
				ta.add(this.a.getb()); ta.norm();
				tb.add(y.a.getb()); tb.norm();
				var tc=new ctx.FP8(ta);
				tc.mul(tb);
				var t=new ctx.FP8(w1);
				t.add(w2);
				t.neg();
				tc.add(t);

				ta.copy(this.a.geta()); ta.add(this.b.geta()); ta.norm();
				tb.copy(y.a.geta()); tb.add(y.b.geta()); tb.norm();
				var td=new ctx.FP8(ta);
				td.mul(tb);
				t.copy(w1);
				t.add(w3);
				t.neg();
				td.add(t);

				ta.copy(this.a.getb()); ta.add(this.b.geta()); ta.norm();
				tb.copy(y.a.getb()); tb.add(y.b.geta()); tb.norm();
				var te=new ctx.FP8(ta);
				te.mul(tb);
				t.copy(w2);
				t.add(w3);
				t.neg();
				te.add(t);

				w2.times_i();
				w1.add(w2);

				this.a.geta().copy(w1); this.a.getb().copy(tc);
				this.b.geta().copy(td); this.b.getb().copy(te);
				this.c.geta().copy(w3); this.c.getb().zero();

				this.a.norm();
				this.b.norm();

			} else {
				var w1=new ctx.FP8(this.a.geta());
				var w2=new ctx.FP8(this.a.getb());
				var w3=new ctx.FP8(this.c.getb());

				w1.mul(y.a.geta());
				w2.mul(y.a.getb());
				w3.mul(y.c.getb());

				var ta=new ctx.FP8(this.a.geta());
				var tb=new ctx.FP8(y.a.geta());
				ta.add(this.a.getb()); ta.norm();
				tb.add(y.a.getb()); tb.norm();
				var tc=new ctx.FP8(ta);
				tc.mul(tb);
				var t=new ctx.FP8(w1);
				t.add(w2);
				t.neg();
				tc.add(t);

				ta.copy(this.a.geta()); ta.add(this.c.getb()); ta.norm();
				tb.copy(y.a.geta()); tb.add(y.c.getb()); tb.norm();
				var td=new ctx.FP8(ta);
				td.mul(tb);
				t.copy(w1);
				t.add(w3);
				t.neg();
				td.add(t);

				ta.copy(this.a.getb()); ta.add(this.c.getb()); ta.norm();
				tb.copy(y.a.getb()); tb.add(y.c.getb()); tb.norm();
				var te=new ctx.FP8(ta);
				te.mul(tb);
				t.copy(w2);
				t.add(w3);
				t.neg();
				te.add(t);

				w2.times_i();
				w1.add(w2);
				this.a.geta().copy(w1); this.a.getb().copy(tc);

				w3.times_i();
				w3.norm();
				this.b.geta().zero(); this.b.getb().copy(w3);

				te.norm();
				te.times_i();
				this.c.geta().copy(te);
				this.c.getb().copy(td);

				this.a.norm();
				this.c.norm();

			}
			this.stype=ctx.FP.SPARSE;
		},