cvs commit: src/lib/msun/src e_lgammaf_r.c

Bruce Evans bde at
Mon Nov 28 09:03:32 GMT 2005

On Mon, 28 Nov 2005, Bruce Evans wrote:

>  Now the max error for lgammaf(x) with |x| < 2**-21 is 0.7885 ulps, and
>  speed and accuracy are almost the same for positive and negative args
>  in this range.  The maximum error overall is still infinity ulps.

Oops.   The max error overall is only 7497618.070 ulps (i.e., the
result is off by a factor of almost 2, or has about 1 bit of accuracy).
This occurs for lgammaf(-2.45702481269836F).


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