select_precision(n) 1.0 "flibs"

NAME

select_precision - Select the precision for real variables

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DESCRIPTION

The auxiliary select_precision module defines three parameters by which you can select the precision for real variables and constants:

sp - Single precision
dp - Double precision (the real kind whose precision is larger than that of single precision)
wp - Working precision. If you consistently use wp as the kind for your real variables and constants, then switching between single and double precision is merely a matter of setting wp to either sp or dp in this module and recompiling.

Note: One of the pitfalls in using double precision is that literal constants, such as 1.2345678901234567890 are not automatically interpreted as double precision. You need to specify the kind explicitly: 1.2345678901234567890_wp will define the constant in the working precision.