PGI Fortran Reference manual - The Portland Group

Input and Output5.5.2.7. ES Format ControlThe ES specifier transfers real values in scientific notation. The ES format specifier has two basicforms:ESw.dESw.dEewhere w is the field width, d the number of digits in the fractional part and e the number of digitsto be printed in the exponent part.For output, the scale factor controls the decimal normalization as in the D specifier.On output, the number is presented in scientific notation, where the absolute value of thesignificand is 10> | significand | 1.5.5.2.8. F Format Control - Real Single Precision DataThe F specifier transfers real values. The form of the F specifier is:Fw.dwhere w is the field width and d is the number of digits in the fractional part.On input, if the field does not contain a decimal digit or an exponent, right-hand d digits, withleading zeros, are interpreted as being the fractional part.On output, a leading zero is only produced to the left of the decimal point if the value is less thanone.5.5.2.9. G Format ControlThe G format specifier provides generalized editing of real data. The G format has two basicforms:Gw.dGw.dEeThe specifier transfers real values; it acts like the F format control on input and depending on thevalue’s magnitude, like E or F on output. The magnitude of the data determines the output format.For details on the actual format used, based on the magnitude, refer to the ANSI FORTRANStandard (Section 13.5.9.2.3 G Editing).5.5.2.10. I Format Control – Integer DataThe I format specifier transfers integer values. The I format specifier has two basic forms:IwIw.mwhere w is the field width and m is the minimum filed width on output, including leading zeros.If present, m must not exceed width w.On input, the external field to be input must contain (unsigned) decimal characters only. An allblank field is treated as a value of zero. If the value of the external field exceeds the range of thecorresponding list element, an error occurs.On output, the I format descriptor transfers the decimal values of the corresponding I/O listelement, right-justified, to an external field that is w characters long.PGI Fortran Reference Guide 78