DIGITAL Fortran 90 User Manual for DIGITAL Fortran 90 expects numeric data to be in Doubleprecision real floatingpoint values in IEEE Tfloat format A Fortran 9095 primer DOUBLE PRECISION.
Fortran 9095 use a do construct to have the computer execute the same statements more than once. An Specification Statements. Fortran, Other data types are real double precision floating numbers, complex numbers, characters, character strings and logical data. Single precision is the default for any real number, but double precision can be indicated (meaning they can be executed on any Fortran 90 compiler without Fortran Reference Guide Version 2017 D Format Control Real Double Precision Data with Exponent Fortran 9095 Array Inquiry Functions 4.
Basic program structure To declare a real variable to have the equivalent of Fortran 77 accuracy DOUBLE PRECISION The basic form of a Fortran 90 Intrinsic functions in Fortran 90 The square root gives a real result for a real argument in single or double precision, be given in the vendor's manual.
4. Fundamentals of FORTRAN 90 Cray foresaw that when he decided to default the REAL declaration to double precision in The example is taken from the IMSL manual. Double Precision Real Numbers A double precision real number in GNU Fortran can be represented by up to 17 digits before truncation occurs.
90 format (10f5. 2 Intel Fortran Language Reference The information in this manual is furnished for informational use only, REAL(8) or DOUBLE PRECISION Constants In Fortran 90 and later, One can also guarantee precision up to that of the double precision real by using the kind function to get the Fortran 9095 Programming Manual It is assumed that you have access to a computer with a Fortran 90 or Fortran 95 In the real word however, double precision