diff options
Diffstat (limited to 'math/s_clog10l.c')
| -rw-r--r-- | math/s_clog10l.c | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/math/s_clog10l.c b/math/s_clog10l.c index 8481e45d4e..da40477a80 100644 --- a/math/s_clog10l.c +++ b/math/s_clog10l.c @@ -1,5 +1,5 @@ /* Compute complex base 10 logarithm. - Copyright (C) 1997-2015 Free Software Foundation, Inc. + Copyright (C) 1997-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -78,15 +78,8 @@ __clog10l (__complex__ long double x) if (absx == 1.0L && scale == 0) { - long double absy2 = absy * absy; - if (absy2 <= LDBL_MIN * 2.0L * M_LN10l) - { - long double force_underflow = absy2 * absy2; - __real__ result = absy2 * (M_LOG10El / 2.0); - math_force_eval (force_underflow); - } - else - __real__ result = __log1pl (absy2) * (M_LOG10El / 2.0L); + __real__ result = __log1pl (absy * absy) * (M_LOG10El / 2.0L); + math_check_force_underflow_nonneg (__real__ result); } else if (absx > 1.0L && absx < 2.0L && absy < 1.0L && scale == 0) { @@ -96,14 +89,17 @@ __clog10l (__complex__ long double x) __real__ result = __log1pl (d2m1) * (M_LOG10El / 2.0L); } else if (absx < 1.0L - && absx >= 0.75L + && absx >= 0.5L && absy < LDBL_EPSILON / 2.0L && scale == 0) { long double d2m1 = (absx - 1.0L) * (absx + 1.0L); __real__ result = __log1pl (d2m1) * (M_LOG10El / 2.0L); } - else if (absx < 1.0L && (absx >= 0.75L || absy >= 0.5L) && scale == 0) + else if (absx < 1.0L + && absx >= 0.5L + && scale == 0 + && absx * absx + absy * absy >= 0.5L) { long double d2m1 = __x2y2m1l (absx, absy); __real__ result = __log1pl (d2m1) * (M_LOG10El / 2.0L); |