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0dd5a560 |
| 28-Jan-2024 |
Steve Kargl <kargl@FreeBSD.org> |
lib/msun: Cleanup after $FreeBSD$ removal
Remove no longer needed explicit inclusion of sys/cdefs.h.
PR: 276669
MFC after: 1 week
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Revision tags: release/14.0.0 |
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1d386b48 |
| 16-Aug-2023 |
Warner Losh <imp@FreeBSD.org> |
Remove $FreeBSD$: one-line .c pattern
Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
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Revision tags: release/13.2.0, release/12.4.0, release/13.1.0, release/12.3.0, release/13.0.0, release/12.2.0, release/11.4.0, release/12.1.0, release/11.3.0, release/12.0.0, release/11.2.0, release/10.4.0, release/11.1.0, release/11.0.1, release/11.0.0, release/10.3.0, release/10.2.0, release/10.1.0, release/9.3.0, release/10.0.0, release/9.2.0, release/8.4.0, release/9.1.0, release/8.3.0_cvs, release/8.3.0 |
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8fa0b743 |
| 23-Jan-2012 |
Xin LI <delphij@FreeBSD.org> |
IFC @230489 (pending review).
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Revision tags: release/9.0.0 |
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70d8f36a |
| 27-Oct-2011 |
Peter Grehan <grehan@FreeBSD.org> |
IFC @ r226824
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b052ec90 |
| 15-Oct-2011 |
David Schultz <das@FreeBSD.org> |
Various changes to improve the accuracy and speed of log{2,10}{,f}.
- Rename __kernel_log() to k_log1p().
- Move some of the work that was previously done in the kernel log into
the callers. This
Various changes to improve the accuracy and speed of log{2,10}{,f}.
- Rename __kernel_log() to k_log1p().
- Move some of the work that was previously done in the kernel log into
the callers. This enables further refactoring to improve accuracy or
speed, although I don't recall the details.
- Use extra precision when adding the final scaling term, which improves
accuracy.
- Describe and work around compiler problems that break some of the
multiprecision calculations.
A fix for a small bug is also included:
- Add a special case for log*(1). This is needed to ensure that log*(1) == +0
instead of -0, even when the rounding mode is FE_DOWNWARD.
Submitted by: bde
show more ...
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Revision tags: release/7.4.0_cvs, release/8.2.0_cvs, release/7.4.0, release/8.2.0 |
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6d4b9715 |
| 09-Dec-2010 |
Dimitry Andric <dim@FreeBSD.org> |
Sync: merge r216133 through r216338 from ^/head.
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63687c8b |
| 07-Dec-2010 |
David Schultz <das@FreeBSD.org> |
Fix various nits in style and comments that were pointed out by bde.
Code changes verified with md5.
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e7780530 |
| 05-Dec-2010 |
David Schultz <das@FreeBSD.org> |
Add a "kernel" log function, based on e_log.c, which is useful for
implementing accurate logarithms in different bases. This is based
on an approach bde coded up years ago.
This function should alw
Add a "kernel" log function, based on e_log.c, which is useful for
implementing accurate logarithms in different bases. This is based
on an approach bde coded up years ago.
This function should always be inlined; it will be used in only a few
places, and rudimentary tests show a 40% performance improvement in
implementations of log2() and log10() on amd64.
The kernel takes a reduced argument x and returns the same polynomial
approximation as e_log.c, but omitting the low-order term. The low-order
term is much larger than the rest of the approximation, so the caller of
the kernel function can scale it to the appropriate base in extra precision
and obtain a much more accurate answer than by using log(x)/log(b).
show more ...
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