diff options
Diffstat (limited to 'math/s_cacos.c')
| -rw-r--r-- | math/s_cacos.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/math/s_cacos.c b/math/s_cacos.c index d0aaba4e6a..2cacaf5d1b 100644 --- a/math/s_cacos.c +++ b/math/s_cacos.c @@ -1,5 +1,5 @@ /* Return cosine of complex double value. - Copyright (C) 1997-2014 Free Software Foundation, Inc. + Copyright (C) 1997-2015 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -34,6 +34,8 @@ __cacos (__complex__ double x) y = __casin (x); __real__ res = (double) M_PI_2 - __real__ y; + if (__real__ res == 0.0) + __real__ res = 0.0; __imag__ res = -__imag__ y; } else |