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port3 under g77
- From: Jack Howarth <howarth at bromo dot msbb dot uc dot edu>
- To: gcc at gcc dot gnu dot org
- Date: Mon, 18 Mar 2002 10:07:29 -0500 (EST)
- Subject: port3 under g77
Hello,
In recompiling the port3 math library from Lucent
under g77 I noticed one set of tests failed (at least
under gcc 3.0.1 on sgi). The failing test is p3tests/errk.f
and the authors say in their readme...
The errk test might fail on some systems that offer IEEE-format
floating-point arithmetic, but do not properly support denormalized
numbers. On such systems, just say "touch p3tests/machtest; make" to
continue compiling the PORT3 library.
Perhaps the g77 maintainers may want to download the port3
library and look at the errk.f test to see if we can possibly
come into complience with it. The port3 fortran library source
can be downloaded from...
http://www.bell-labs.com/project/PORT/
Thanks in advance for looking into this issue.
Jack
ps Compared to the values which they have for sgi compilers
g77 3.0.1 gives a diff as follows
--- errk.out Wed Sep 17 12:09:19 1997
+++ errk.li Wed Sep 17 17:10:54 1997
@@ -94,9 +94,9 @@
22 1.4012985E-44 1.0000000E+00 2.0000000E+00 1.0789998E-43 1.0789998E-43 1.0789998E-43 1.0789998E-43
29 1.0789998E-43 1.0789998E-43 1.0789998E-43 1.0789998E-43 1.0789998E-43 1.0789998E-43
0DOUBLE PRECISION STACK
- 1 4.243991598728777-314 4.159111755232590-312 2.121995791014679-313 2.121995791459338-314 4.243991582918676-314
- 6 2.121995791953404-314 6.365987374872080-314 1.060997895779076-313 1.485397054070943-313 1.909796212362811-313
- 11 4.243991586871201-314 7.812501862645149E-03 1.633936759423690-312 1.633936759423690-312 1.633936759423690-312
+ 1 7.214785689380739-313 2.121995791062109-311 2.121995795905929-314 2.121995791459338-314 4.243991582918676-314
+ 6 4.243991582424610-314 8.487983165343286-314 1.273197474826196-313 1.697596633118064-313 2.121995791409931-313
+ 11 2.121995791064085-313 2.000000473111868E+00 1.633936759423690-312 1.633936759423690-312 1.633936759423690-312
16 1.633936759423690-312 1.633936759423690-312
0COMPLEX STACK
1 2.8025969E-45 4.7644148E-44 2.7465450E-43 1.4012985E-42 1.4012985E-44 1.4012985E-45
@@ -137,9 +137,9 @@
995 .0000000E+00 .0000000E+00 .0000000E+00 .0000000E+00 .0000000E+00 .0000000E+00
0DOUBLE PRECISION STACK
1 2.100775833544745-312 2.100775833544745-312 2.100775833544745-312 2.100775833544745-312 2.100775833544745-312
- 6 2.121995791953404-314 6.365987374872080-314 1.060997895779076-313 1.485397054070943-313 1.909796212362811-313
- 11 4.243991586871201-314 7.812501862645149E-03 1.633936759423690-312 1.633936759423690-312 1.633936759423690-312
- 16 1.633936759423690-312 1.633936759423690-312 1.633936759043260-312 .000000000000000E+00 .000000000000000E+00
+ 6 4.243991582424610-314 8.487983165343286-314 1.273197474826196-313 1.697596633118064-313 2.121995791409931-313
+ 11 2.121995791064085-313 2.000000473111868E+00 1.633936759423690-312 1.633936759423690-312 1.633936759423690-312
+ 16 1.633936759423690-312 1.633936759423690-312 3.804305472977598-322 .000000000000000E+00 .000000000000000E+00
21 .000000000000000E+00 .000000000000000E+00 .000000000000000E+00 .000000000000000E+00 .000000000000000E+00
** **
496 .000000000000000E+00 .000000000000000E+00 .000000000000000E+00 .000000000000000E+00 .000000000000000E+00
where errk.out is the sgi compiler output and errk.li is that from g77 on sgi.