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17 changes: 9 additions & 8 deletions docs/2-references/libm/README.md
Original file line number Diff line number Diff line change
Expand Up @@ -1587,14 +1587,15 @@ Link with `-lsleef`.

#### Description

These functions evaluate the inverse hyperbolic cosine function of a value in
a. The error bound of the returned value is 1.0 ULP if a is in [-1.34e+154,
1.34e+154] for the double-precision function or 1.001 ULP if a is in
[-1.84e+19, 1.84e+19] for the single-precision function . If a is a finite
value out of this range, infinity with a correct sign or a correct value with
1.0 ULP error bound is returned. These functions treat the non-number arguments
and return non-numbers as specified in the C99 specification. These functions
do not set errno nor raise an exception.
These functions evaluate the inverse hyperbolic cosine function of a value in a.
The error bound of the returned value is 1.0 ULP if a is in [1, 1.34e+154] for
the double-precision function or 1.001 ULP if a is in [1, 1.84e+19] for the
single-precision function. If a is lower than 1, nan is returned (including for
the negative infinity case). If the argument is positive (including positive
infinity) but lives outside the ranges defined above, then positive infinity is
returned. These functions treat the non-number arguments and return non-numbers
as specified in the C99 specification. These functions do not set errno nor raise
an exception.

### Sleef_atanh_u10
### Sleef_atanhf_u10
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