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Gentoo's Bugzilla – Attachment 64304 Details for
Bug 100289
Glibc patches to enhance performance on x86_64.
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[patch]
glibc-2.3.5-x86_64-new-libm-aliasing.patch
glibc-2.3.5-x86_64-new-libm-aliasing.patch (text/plain), 530 bytes, created by
Simon Strandman
on 2005-07-25 14:24:28 UTC
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Description:
glibc-2.3.5-x86_64-new-libm-aliasing.patch
Filename:
MIME Type:
Creator:
Simon Strandman
Created:
2005-07-25 14:24:28 UTC
Size:
530 bytes
patch
obsolete
>--- glibc-2.3.5/sysdeps/x86_64/fpu/w_acosf.c.x86_64-new-libm-aliasing 2005-06-03 06:33:39.000000000 -0400 >+++ glibc-2.3.5/sysdeps/x86_64/fpu/w_acosf.c 2005-06-03 08:48:07.000000000 -0400 >@@ -71,10 +71,7 @@ float __acosf(float x) > > unsigned int ux, aux, xneg; > >- /* For some reason using this: >- GET_BITS_SP32(x, ux); >- instead of the following line makes acosf run like a snail on a Hammer. */ >- ux = (*((unsigned int *)&x)); >+ GET_BITS_SP32(x, ux); > > aux = ux & ~SIGNBIT_SP32; > xneg = (ux & SIGNBIT_SP32);
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bug 100289
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64301
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64302
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64303
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64304
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64305
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64306
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65840
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81968
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81969