Examples
0.123
-0.123
+0.123
.123
-.123
+.123
-0.123
+0.123
.123
-.123
+.123
-123.E4
+123.E4
.123e4
123.456
-123.456
+123.456
+123.E4
.123e4
123.456
-123.456
+123.456
.123e-4
-.123e-4
+.123e+4
123.456E-7
-123.456E+7
+123.456e+7
-.123e-4
+.123e+4
123.456E-7
-123.456E+7
+123.456e+7
State Diagram
In the above diagram:
| DIGIT | → | the characters "0" thru "9" |
| Ee | → | the character "E" or "e" |
| EOS | → | end of string |
| PERIOD | → | the period character (".") |
| SIGN | → | the character "+" or "-" |
Note: The starting and ending spaces have been removed from the string.