diff options
| author | zimmerma <zimmerma@280ebfd0-de03-0410-8827-d642c229c3f4> | 2021-02-01 10:58:22 +0000 |
|---|---|---|
| committer | zimmerma <zimmerma@280ebfd0-de03-0410-8827-d642c229c3f4> | 2021-02-01 10:58:22 +0000 |
| commit | fac90264413e3b510c14ee8245a5abfd9ab65dff (patch) | |
| tree | 392af338bbf6fb6649e70380901d598ab86b26a2 /src | |
| parent | 6d81413c1cdb7f2d7edca0d2b46e58d2e933000b (diff) | |
| download | mpfr-fac90264413e3b510c14ee8245a5abfd9ab65dff.tar.gz | |
[src/asinu.c] improved a comment
git-svn-id: https://scm.gforge.inria.fr/anonscm/svn/mpfr/trunk@14305 280ebfd0-de03-0410-8827-d642c229c3f4
Diffstat (limited to 'src')
| -rw-r--r-- | src/asinu.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/asinu.c b/src/asinu.c index 3c7d7d527..befdd0db0 100644 --- a/src/asinu.c +++ b/src/asinu.c @@ -51,7 +51,8 @@ mpfr_asinu (mpfr_ptr y, mpfr_srcptr x, unsigned long u, mpfr_rnd_t rnd_mode) else /* necessarily x=0 */ { MPFR_ASSERTD(MPFR_IS_ZERO(x)); - /* asin(0)=0 with same sign (even when u=0?) */ + /* asin(0)=0 with same sign, even when u=0 to ensure + asinu(-x,u) = -asinu(x,u) */ MPFR_SET_ZERO (y); MPFR_SET_SAME_SIGN (y, x); MPFR_RET (0); /* exact result */ |