HP 3000 Manuals HP 3000 Manuals
Floating Constants
Floating constants represent floating-point values.
Syntax
floating-constant ::=
fractional-constant [exponent-part] [floating-suffix]
digit-sequence exponent-part [floating-suffix]
fractional-constant ::=
[digit-sequence] . digit-sequence
digit-sequence .
exponent-part ::=
e [sign] digit-sequence
E [sign] digit-sequence
sign ::=
+
-
digit-sequence ::=
digit
digit-sequence digit
floating-suffix ::=
F
f
L
l
NOTE Suffixes in floating-constants are available only in ANSI mode.
Description
A floating constant has a value part that may be followed by an exponent
part and a suffix specifying its type. The value part may include a
digit sequence representing the whole-number part, followed by a period
(.), followed by a digit sequence representing the fraction part. The
exponent includes an e or an E followed by an exponent consisting of an
optionally signed digit sequence. Either the whole-number part or the
fraction part must be used; either the period or the exponent part must
be used.
The format of floating-point numbers is given in Chapter 9, HP C/iX
Implementation Topics.
A floating constant may include a suffix that specifies its type. F or f
specifies type float (single precision). L or l specifies long double
(quad precision). The default type (unsuffixed) is double.
Examples
3.28e+3f float constant = 3280
6.E2F float constant = 600
201e1L long double constant = 2010
4.8 double constant = 4.8