diff options
Diffstat (limited to 'lib/libm/common_source/atanh.c')
| -rw-r--r-- | lib/libm/common_source/atanh.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/libm/common_source/atanh.c b/lib/libm/common_source/atanh.c index 89cb61c..e5cdadd 100644 --- a/lib/libm/common_source/atanh.c +++ b/lib/libm/common_source/atanh.c @@ -38,14 +38,14 @@ static char sccsid[] = "@(#)atanh.c 8.1 (Berkeley) 6/4/93"; /* ATANH(X) * RETURN THE HYPERBOLIC ARC TANGENT OF X * DOUBLE PRECISION (VAX D format 56 bits, IEEE DOUBLE 53 BITS) - * CODED IN C BY K.C. NG, 1/8/85; + * CODED IN C BY K.C. NG, 1/8/85; * REVISED BY K.C. NG on 2/7/85, 3/7/85, 8/18/85. * * Required kernel function: * log1p(x) ...return log(1+x) * * Method : - * Return + * Return * 1 2x x * atanh(x) = --- * log(1 + -------) = 0.5 * log1p(2 * --------) * 2 1 - x 1 - x |
