REAL.H File Reference
Go to the source code of this file.
Defines | |
| #define | BL_USE_DOUBLE 1 |
| The macro BL indicates that C++ floating-point calculations should use "double" variables and Fortran floating-point calculations should use "real*8" variables. | |
Typedefs | |
| typedef double | Real |
| Real is a typedef specifying the precision of the floating-point calculations in C++ code. | |
Define Documentation
| #define BL_USE_DOUBLE 1 |
The macro BL indicates that C++ floating-point calculations should use "double" variables and Fortran floating-point calculations should use "real*8" variables.
One of BL or BL must always be defined when compiling and using BoxLib. This macro is not allowed on Cray architectures; i.e. only BL is allowed on Cray architectures.
Typedef Documentation
| typedef double Real |
Real is a typedef specifying the precision of the floating-point calculations in C++ code.
It will be either `float' or `double' depending upon which of the macros BL or BL, respectively, is defined during compilations. For portability, you should write floating-point code in terms of this typedef, instead of using `float' or `double' directly.
Note that exactly one of these macros must be defined when compiling any module that uses floating-point. Also, on Cray architectures all floating-point computations are done in 64 bits.
