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Diffstat (limited to 'manual/math.texi')
| -rw-r--r-- | manual/math.texi | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/manual/math.texi b/manual/math.texi index 56f2295..18b7173 100644 --- a/manual/math.texi +++ b/manual/math.texi @@ -780,6 +780,20 @@ near zero. The @code{log2p1} functions are from TS 18661-4:2015. @end deftypefun +@deftypefun double log10p1 (double @var{x}) +@deftypefunx float log10p1f (float @var{x}) +@deftypefunx {long double} log10p1l (long double @var{x}) +@deftypefunx _FloatN log10p1fN (_Float@var{N} @var{x}) +@deftypefunx _FloatNx log10p1fNx (_Float@var{N}x @var{x}) +@standards{TS 18661-4:2015, math.h} +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} +These functions return a value equivalent to @w{@code{log10 (1 + @var{x})}}. +They are computed in a way that is accurate even if @var{x} is +near zero. + +The @code{log10p1} functions are from TS 18661-4:2015. +@end deftypefun + @cindex complex exponentiation functions @cindex complex logarithm functions |