Gentoo Archives: gentoo-amd64

From: Volker Armin Hemmann <volkerarmin@××××××××××.com>
To: gentoo-amd64@l.g.o
Subject: Re: [gentoo-amd64] Possible Math Problem - Request For Verification
Date: Sun, 26 Jun 2011 12:03:22
Message-Id: 2057836.K4is2TTT77@localhost
In Reply to: [gentoo-amd64] Possible Math Problem - Request For Verification by Frank Peters
Believe it or not, this tarball is straight from hell.

1. do not tar-bomb. Pack directories not files.
2. the permissions are a nightmare.
3. I accidentally unpacked in /tmp and your tarball tried to set UTIME and the 
permissions of the parent directory. WTF?
4. have you checked that the errors you are seeing are really errors?
Just remember that stupidity about 80bit/64bit/128bit floats all around.
5. http://gcc.gnu.org/wiki/FloatingPointMath

without additional settings gcc 4.5.2:

UCBFAIL indicates problems!
/tmp/usbtest/catan_DP.output:UCBFAIL catan_DP.output.tmp 127
/tmp/usbtest/ccos_DP.output:UCBFAIL ccos_DP.output.tmp 127
/tmp/usbtest/cdiv_DP.output:UCBFAIL cdiv_DP.output
/tmp/usbtest/cexp_DP.output:UCBFAIL cexp_DP.output.tmp 127
/tmp/usbtest/cexpm1_DP.output:UCBFAIL cexpm1_DP.output.tmp 127
/tmp/usbtest/cfindpi_DP.output:UCBFAIL cfindpi_DP.output
/tmp/usbtest/clib_DP.output: ucbtest UCBFAIL in cabsd at line 701 for double 
/tmp/usbtest/clib_DP.output: ucbtest UCBFAIL in powd at line 701 for double 
/tmp/usbtest/clib_DP.output:UCBFAIL clib_DP.output , 25 out of 25 tests 
completed
/tmp/usbtest/clog1p_DP.output:UCBFAIL clog1p_DP.output.tmp 127
/tmp/usbtest/clog_DP.output:UCBFAIL clog_DP.output.tmp 127
/tmp/usbtest/cmul_DP.output:UCBFAIL cmul_DP.output
/tmp/usbtest/cpar_DP.output:UCBFAIL cpar_DP.output
/tmp/usbtest/cpi_DP.output:UCBFAIL cpi_DP.output
/tmp/usbtest/csin_DP.output:UCBFAIL csin_DP.output.tmp 127
/tmp/usbtest/csqr_DP.output:UCBFAIL csqr_DP.output






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#163933

Replies

Subject Author
Re: [gentoo-amd64] Possible Math Problem - Request For Verification Frank Peters <frank.peters@×××××××.net>
Re: [gentoo-amd64] Possible Math Problem - Request For Verification Volker Armin Hemmann <volkerarmin@××××××××××.com>