//       algorithm can be used to compute log1p(x) to within a few ULP:
//
//              u = 1+x;
//              if(u==1.0) return x ; else
//                         return log(u)*(x/(u-1.0));
//
//       See HP-15C Advanced Functions Handbook, p.193.

// Log1p returns the natural logarithm of 1 plus its argument x.
// It is more accurate than [Log](1 + x) when x is near zero.
//
// Special cases are:
//
//	Log1p(+Inf) = +Inf

		4, 0, 0, '.', 0,
		"a\t\tb",
		"a.......b",
	},

	{
		"15b",
		4, 0, 0, '.', DiscardEmptyColumns,
		"a\t\tb", // htabs - do not discard column
		"a.......b",
	},

	{
		"15c",
		4, 0, 0, '.', DiscardEmptyColumns,
		"a\v\vb",
		"a...b",
	},

	{
		"15d",
		4, 0, 0, '.', AlignRight | DiscardEmptyColumns,
		"a\v\vb",
		"...ab",
	},

	{
		"16a",