Fix log1pl (LDBL_MAX) in FE_UPWARD mode (bug 16564)

Wed May 14 10:26:00 GMT 2014

On 05/12/2014 04:18 PM, Joseph S. Myers wrote:
> Bug 16564 is spurious overflow of log1pl (LDBL_MAX) in FE_UPWARD mode,
> resulting from log1pl adding 1 to its argument (for arguments not
> close to 0), which overflows in that mode.  This patch fixes this by
> avoiding adding 1 to large arguments (precisely what counts as large
> depends on the floating-point format).

Looks fine, thanks,
Andreas
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