Sender: rich AT phekda DOT freeserve DOT co DOT uk
Message-ID: <3EFEF32B.D01A3C0E@phekda.freeserve.co.uk>
Date: Sun, 29 Jun 2003 15:09:47 +0100
From: Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
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To: DJGPP workers <djgpp-workers AT delorie DOT com>
Subject: strtod test takes a long time
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Reply-To: djgpp-workers AT delorie DOT com

Hello.

The strtod test (tests/libc/ansi/stdlib/strtod.c) seems to take a long time.
DJGPP CVS built with gcc 3.2.2, binutils 2.13 on an Athlon 850MHz:

bash-2.04$ time ./strtod.exe
                0e20  ->  0
               1e200  ->  1e+200
        0e2000000000  ->  0
        1e6000000000  ->  inf
strtod: Output of function out of range (ERANGE)
               1e400  ->  inf
strtod: Output of function out of range (ERANGE)
              1e-400  ->  0
strtod: Output of function out of range (ERANGE)
                 InF  ->  inf
                -inf  ->  -inf
            infinity  ->  inf
           -inFinitY  ->  -inf
                 nAn  ->  nan(0xfffffe0000000)
                -nan  ->  -nan
               Nan()  ->  nan
              nan(0)  ->  nan
              Nan(1)  ->  nan(0x8000000000001)
       -NaN(0xfffff)  ->  -nan(0x80000000fffff)

real    0m16.100s
user    0m32.198s
sys     0m0.000s

FWIW it takes about the same amount of time when compiled with gcc 3.3.

Is this expected?

I'm wondering if we could exit strto* faster, when the exponent is larger than
one we support (*_MAX_EXP from <float.h>.

Bye, Rich =]

-- 
Richard Dawe [ http://www.phekda.freeserve.co.uk/richdawe/ ]