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Diffstat (limited to 'contrib/gdtoa/test/README')
| -rw-r--r-- | contrib/gdtoa/test/README | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/contrib/gdtoa/test/README b/contrib/gdtoa/test/README index 79b1c91..685fe13 100644 --- a/contrib/gdtoa/test/README +++ b/contrib/gdtoa/test/README @@ -55,7 +55,12 @@ logic (on double and double-double conversions). Program strtodt tests strtod on some hard cases (in file testnos3) posted by Fred Tydeman to comp.arch.arithmetic on 26 Feb. 1996. +To get correct results on Intel (x86) systems, the rounding precision +must be set to 53 bits. This can be done, e.g., by invoking +fpinit_ASL(), whose source appears in +http://www.netlib.org/ampl/solvers/fpinit.c . These are simple test programs, not meant for exhaustive testing, but for manually testing "interesting" cases. Paxson's testbase is good for more exhaustive testing, in part with random inputs. +See ftp://ftp.ee.lbl.gov/testbase-report.ps.Z . |
