qd
Version 1.0.2.1 revision 0 uploaded by ClaudeHeilandAllen.
Package meta
- Synopsis
- double-double and quad-double number type via libqd
- Description
This package supports both a double-double datatype (approx. 32 decimal digits) and a quad-double datatype (approx. 64 decimal digits), using libqd (which is implemented in C++ with C and Fortran wrappers). To compile this package you need libqd to be installed.
Numeric.QD.DoubleDouble.DoubleDoubleandNumeric.QD.QuadDouble.QuadDoubleare strict tuples ofCDoubles, with instances of:BinDecode,DecimalFormat,Eq,Floating,Fractional,Num,Ord,Read,Real,RealFrac,Show,Storable,Typeable.Additional note: libqd depends on 64bit doubles, while some FPU architectures use 80bit. When using the Unsafe modules this might cause erroneous results; the Safe modules (used by the instances above) set and restore the FPU flags in foreign code to avoid race conditions from pre-emptive Haskell threading.
- Author
- Claude Heiland-Allen
- Bug reports
- n/a
- Category
- Math
- Copyright
- n/a
- Homepage
- n/a
- Maintainer
- claude@mathr.co.uk
- Package URL
- n/a
- Stability
- n/a