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c.f. bug 424647
List Archive: gentoo-amd64
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To: gentoo-amd64@g.o
From: Volker Armin Hemmann <volkerarmin@...>
Subject: Re: Possible Math Problem - Request For Verification
Date: Sun, 26 Jun 2011 14:13:37 +0200
On Sunday 26 June 2011 13:30:41 you wrote:
> 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

ignore those results, were without time.

with time and additional -frounding-math -fsignaling-nans -fno-builtin"

UCBFAIL indicates problems!
/tmp/usbtest/ccos_DP.output: ucbtest UCBFAIL in COS(X) at line 444 for generic 
/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/csin_DP.output: ucbtest UCBFAIL in SIN(X) at line 444 for generic 

only 11 out of 14 show UCBPASS!


-- 
#163933


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-- Piotr Hosowicz
References:
Possible Math Problem - Request For Verification
-- Frank Peters
Re: Possible Math Problem - Request For Verification
-- Volker Armin Hemmann
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Updated Jun 28, 2012

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