- #1
mushi
- 23
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Hi guys,
I know I may sound stupid to me many of you but can anybody tell me what does 'rfac' do in Fortran.
I know I may sound stupid to me many of you but can anybody tell me what does 'rfac' do in Fortran.
'rfac' is a built-in function in Fortran that stands for "real fractional accuracy." It is used to calculate the smallest increment between two real numbers that can be represented accurately in the computer's memory.
'rfac' is calculated by taking the absolute value of the difference between two real numbers and dividing it by the larger of the two numbers. This gives the smallest increment between the two numbers that can be represented accurately.
'rfac' is important in Fortran because it allows for precise calculations and comparisons of real numbers. It helps to avoid rounding errors and ensures accurate results in scientific and numerical computations.
No, 'rfac' is a built-in function in Fortran and cannot be modified or changed by the user. However, there are other methods and techniques that can be used to improve the accuracy of calculations in Fortran programs.
Yes, there are alternative methods for calculating real fractional accuracy in Fortran such as the ISO_FORTRAN_ENV module, which includes the built-in function 'epsilon' for determining the smallest increment between two real numbers. Additionally, some compilers may have their own built-in functions or options for improving accuracy in calculations.