The Pascal compiler company
The Pascal compiler company
A Real number represents a numeric value with a fractional parts (the fractional part may be zero).
Irie Pascal supports real numbers with values between about 1e308 and about -1e308.
123.456
1.23456e2 which is also equal to 123.456
1.23456e02 which is also equal to 123.456
123456.0e-3 which is also equal to 123.456
7e-1 which is equal to 0.7 real-number =
digit-sequence '.' fractional-part [ exponent scale-factor ] |
digit-sequence exponent scale-factor
digit = '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9'
digit-sequence = digit { digit }
exponent = 'e'
fractional-part = digit-sequence
scale-factor = [ sign ] digit-sequence
sign = '-' | '+'