diff options
Diffstat (limited to 'math/s_catan.c')
| -rw-r--r-- | math/s_catan.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/math/s_catan.c b/math/s_catan.c index 783941a72e..6a1016e74c 100644 --- a/math/s_catan.c +++ b/math/s_catan.c @@ -20,7 +20,7 @@ #include <complex.h> #include <math.h> #include <math_private.h> - +#include <float.h> __complex__ double __catan (__complex__ double x) @@ -83,6 +83,17 @@ __catan (__complex__ double x) num = 4.0 * __imag__ x; __imag__ res = 0.25 * __log1p (num / den); } + + if (fabs (__real__ res) < DBL_MIN) + { + volatile double force_underflow = __real__ res * __real__ res; + (void) force_underflow; + } + if (fabs (__imag__ res) < DBL_MIN) + { + volatile double force_underflow = __imag__ res * __imag__ res; + (void) force_underflow; + } } return res; |