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Diffstat (limited to 'math/xblas/pkg-descr')
| -rw-r--r-- | math/xblas/pkg-descr | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/math/xblas/pkg-descr b/math/xblas/pkg-descr new file mode 100644 index 000000000000..a7fd8864ee48 --- /dev/null +++ b/math/xblas/pkg-descr @@ -0,0 +1,20 @@ +This library of routines is part of a reference implementation for the Dense +and Banded BLAS routines, along with their Extended and Mixed Precision +versions, as documented in Chapters 2 and 4 of the new BLAS Standard. + +EXTENDED PRECISION is only used internally; the input and output arguments +remain the same as in the existing BLAS. At present, we only allow Single, +Double, or Extra internal precision. Extra precision is implemented as +double-double precision (128-bit total, 106-bit significand). The routines +for the double-double precision basic arithmetic operations +, -, *, / were +developed by David Bailey. + +We have designed all our routines assuming that single precision arithmetic +is actually done in IEEE single precision (32 bits) and that double precision +arithmetic is actually done in IEEE double precision (64 bits). The routines +also pass our tests on an Intel machine with 80-bit floating point registers. + +MIXED PRECISION permits some input/output arguments to be of different types +(mixing real and complex) or precisions (mixing single and double). + +WWW: http://www.netlib.org/xblas/ |