diff options
Diffstat (limited to 'manual/math.texi')
| -rw-r--r-- | manual/math.texi | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/manual/math.texi b/manual/math.texi index 90750b2..fbabf37 100644 --- a/manual/math.texi +++ b/manual/math.texi @@ -883,6 +883,22 @@ instead of the direct formula is wise, since the error is much smaller. See also the function @code{cabs} in @ref{Absolute Value}. @end deftypefun +@deftypefun double rootn (double @var{x}, long long int @var{n}) +@deftypefunx float rootnf (float @var{x}, long long int @var{n}) +@deftypefunx {long double} rootnl (long double @var{x}, long long int @var{n}) +@deftypefunx _FloatN rootnfN (_Float@var{N} @var{x}, long long int @var{n}) +@deftypefunx _FloatNx rootnfNx (_Float@var{N}x @var{x}, long long int @var{n}) +@standards{TS 18661-4:2015, math.h} +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} +These return the @var{n}th root of @var{x}. If @var{n} is zero, or if +@var{x} is negative and @var{n} is even, @code{rootn} signals a domain +error. + +The @code{rootn} functions are from TS 18661-4:2015 (which used +@code{intmax_t} as the type of @var{n}; the type changed to +@code{long long int} in C23). +@end deftypefun + @deftypefun double expm1 (double @var{x}) @deftypefunx float expm1f (float @var{x}) @deftypefunx {long double} expm1l (long double @var{x}) |