Number

The Decimal or a base 10 number is the most common format that we use today. It contains an integer component, that may be prefixed with a minus sign (- U+002D) or plus sign (+ U+002B) and maybe followed by a fraction part and/or exponent part.

The Base 10 Decimal Number

Chars	Char Code	Detail
-	U+002D	Minus Sign
+	U+002B	Plus Sign
.	U+002E	Decimal Point
0	U+0030	Zero
E	U+0045	Latin uppercase letter E
e	U+0065	Latin lowercase letter e

Some valid examples of decimal numbers are.

~ 1012
~ 10782.509
~ 77817123.1231
~ 10.5E+10
~ +99.99
~ -100
~ .456
~ -.50