1const floating_point = 123.0E+77;
 2const another_float = 123.0;
 3const yet_another = 123.0e+77;
 4
 5const hex_floating_point = 0x103.70p-5;
 6const another_hex_float = 0x103.70;
 7const yet_another_hex_float = 0x103.70P-5;
 8
 9// underscores may be placed between two digits as a visual separator
10const lightspeed = 299_792_458.000_000;
11const nanosecond = 0.000_000_001;
12const more_hex = 0x1234_5678.9ABC_CDEFp-10;
13
14// syntax