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Re: [Patch, libgfortran] Better format hash function


Janne Blomqvist wrote:
Hi,

the attached patch replaces the existing (too?) simple string hash
function with an almost equally simple but supposedly pretty well
working one by D.J. Bernstein.

Regtested on x86_64-unknown-linux-gnu, Ok for trunk?


Attached is a text file containing an extraction of all format strings from the gfortran.dg testsuite. I was planning to start with this and do some actual testing of the hash function so that we could objectively proceed with the tweaks.

Unfortunately, I have not had much time to proceed with this and I thought NEWUNIT is a higher priority for me. The file was extracted with a Python script. I was hoping to add to the test set the NIST suite as well as others to try to get a representative sampling. I doubt that gfortran.dg is very representative, but it is a starting place.

Regards,

Jerry
'("#",A,"#")'
'(A)'
'(A)'
'(A)'
'(i5)'
'(i5)'
'(b0)'
'(a,i0,a)'
'(o0)'
'(a,i0,a)'
'(z0)'
'(a,i0,a)'
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'(a,i0,a)'
'(o0)'
'(a,i0,a)'
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'(a)'
'(a)'
'(i6, (t7, 6i2))'
'(i4)'
'(i2.2)'
'(3X, A, T1, A,/)'
'(A2,1X,A2)'
'("hello"/"world")'
'("hello",t1,"HELLO",1x,"!"/"world",tl12,"WORLD")'
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'("derived = ",i5)'
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'("#",A,"#")'
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'(f9.2,1x,f8.2,2x,f11.7)'
'(100i1)'
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'(f16.10)'
'(F4.1)'
'(SS,F4.1)'
'(SP,F4.1)'
'(A)'
'(2A)'
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'(A,$)'
'(A)'
'(A)'
'(            NaN,            NaN)'
'(            NaN,            NaN)'
'(      +Infinity,      -Infinity)'
'(  0.0000000    , -0.0000000    )'
'(4(a,/),a)'
'(a)'
'(T20,A3,  T1,A4,  T5,A2,  T7,A2,  T9,A4, T17,A2)'
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"('#',F0.2,'#')"
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'("#",A,"#")'
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'(dc,10f8.3)'
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'(80I1)'
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"(2A4)"
"(A4)(A5)"
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'(i6)'
'(i6)'
'(i6)'
'(i6)'
'(i6)'
'(i6)'
"(A)"
"(A)"
"(A)"
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"(A)"
'(a)'
'(a)'
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'("1 2 3 4 5 6 7 8 9")'
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'("1 2 3 4 5 6 7 8 9")'
'("9 8 7 6")'
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'(a)'
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'(10I4)'
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'(G20.10E5)'
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'(o0)'
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"(a,t1,a,a)"
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"(a)"
"(a)"
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'(g0,g0,g0)'
'(1x,a,g0,a)'
"(g0,g0,g0,g0)"
"(g0,g0,',',g0,g0)"
"(1.2345001,2.4567001)"
'(A)'

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