HP Fortran Programmer's Reference

I/O formatting
Edit descriptors
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An E followed by an optionally signed integer constant
A D followed by an optionally signed integer constant
A Q followed by an optionally signed integer constant
All four exponent forms are processed in the same way. Note, however, that e has no effect on
input.
The EN and ES edit descriptors are the same as the F edit descriptor on input. The Q edit
descriptor (an HP Fortran extension) is the same as the E edit descriptor on input.
Table 9-10 provides examples of the real edit descriptors on input. The BZ edit descriptor
listed in the “Descriptor” column treats nonleading blanks in numeric fields as zeroes.
Table9-10 D,E,F,andGeditdescriptors:inputexamples
Descriptor Input field Value stored
F6.5 4.51E4 45100
G4.2 51-3 .00051
E8.3 7.1bEb5 710000
D9.4 bbb45E+35 .0045 x 10 35
BZ, F6.1 -54E3b -5.4 x 10 30
Real edit descriptors on output
The output field for the real descriptors consists of w character positions, filled with leading
blanks (if necessary) and an optionally signed real constant with a decimal point, rounded to d
digits after the decimal point. The following sections describe the real edit descriptors on
output in detail.
DandEeditdescriptors The D and E edit descriptors define a normalized floating-point
field for real and complex values. The value is rounded to d digits. The exponent part consists
of e digits. If Ee is omitted in a D or E edit descriptor, then the exponent occupies two or three
positions, depending on its magnitude. The field width, w, should follow the general rule: w is
greaterthanorequaltod+7. If Ee is used, w isgreaterthanorequaltod+e+5. This rule
provides positions for a leading blank, the sign of the value, the decimal point, d digits, the
exponent letter (D, E, orQ), the sign of the exponent, and the exponent. The Ee, De, andQe
specifications, which are available with the E edit descriptor, control which exponent letter is
output.
Chapter 9