{"1__0", nan},
		{"123_.", nan},
		{"123._", nan},
		{"123._4", nan},
		{"1_2.3_4_", nan},
		{"_.123", nan},
		{"_123.456", nan},
		{"10._0", nan},
		{"10.0e_0", nan},
		{"10.0e0_", nan},
		{"0P-0__0", nan},

		// misc decimal values
		{"3.14159265", 3.14159265},
		{"-687436.79457e-245", -687436.79457e-245},
		{"-687436.79457E245", -687436.79457e245},
		{".0000000000000000000000000000000000000001", 1e-40},