http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52439
Bug #: 52439
Summary: Calculation of natural log
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: dtov...@hotmail.com
Created attachment 26788
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26788
simple fortran calculation of the natural logs mentioned in the description.
Among other files in the zip file, I included a batch file, executable and
output files.
using gfortran (4.7.0):
calculation of DLOG(0.01) = -4.60517020833983359295871196081862
calculation of DLOG(100.0) = 4.60517018598809180218722758581862
Numbers should match except for the sign, the value for DLOG(0.01) also appears
outside a tolerance I expect to find.
using another a calculation routine with another compiler
calculation of DLOG(0.01) = -4.605170185988091368035982909369
calculation of DLOG(100.0) = 4.605170185988091368035982909369
