Mercurial > cpython-lru_cache-weakref
diff Modules/_math.c @ 57869:1a25b420ec00
Merged revisions 76982 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r76982 | mark.dickinson | 2009-12-21 15:40:33 +0000 (Mon, 21 Dec 2009) | 2 lines
Inverse hyperbolic trigonometric functions should call m_log1p, not log1p.
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| author | Mark Dickinson <dickinsm@gmail.com> |
|---|---|
| date | Mon, 21 Dec 2009 15:42:00 +0000 |
| parents | 9751ddcc1882 |
| children | fd25030223b0 |
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--- a/Modules/_math.c Mon Dec 21 15:27:41 2009 +0000 +++ b/Modules/_math.c Mon Dec 21 15:42:00 2009 +0000 @@ -3,6 +3,7 @@ #include "Python.h" #include <float.h> +#include "_math.h" /* The following copyright notice applies to the original implementations of acosh, asinh and atanh. */ @@ -67,7 +68,7 @@ } else { /* 1 < x <= 2 */ double t = x - 1.0; - return log1p(t + sqrt(2.0*t + t*t)); + return m_log1p(t + sqrt(2.0*t + t*t)); } } @@ -103,7 +104,7 @@ } else { /* 2**-28 <= |x| < 2= */ double t = x*x; - w = log1p(absx + t / (1.0 + sqrt(1.0 + t))); + w = m_log1p(absx + t / (1.0 + sqrt(1.0 + t))); } return copysign(w, x); @@ -149,10 +150,10 @@ } if (absx < 0.5) { /* |x| < 0.5 */ t = absx+absx; - t = 0.5 * log1p(t + t*absx / (1.0 - absx)); + t = 0.5 * m_log1p(t + t*absx / (1.0 - absx)); } else { /* 0.5 <= |x| <= 1.0 */ - t = 0.5 * log1p((absx + absx) / (1.0 - absx)); + t = 0.5 * m_log1p((absx + absx) / (1.0 - absx)); } return copysign(t, x); }
