diff options
Diffstat (limited to 'lib/libm/atanh.c')
| -rw-r--r-- | lib/libm/atanh.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/libm/atanh.c b/lib/libm/atanh.c index 08a34d7e..ec0c7a61 100644 --- a/lib/libm/atanh.c +++ b/lib/libm/atanh.c @@ -1,4 +1,7 @@ -#include "libm.h" +#include "libm.h" // for FORCE_EVAL + +#include <math.h> // for log1p, atanh, double_t +#include <stdint.h> // for uint64_t /* atanh(x) = log((1+x)/(1-x))/2 = log1p(2x/(1-x))/2 ~= x + x^3/3 + o(x^5) */ double atanh(double x) |