LCOV - code coverage report
Current view: top level - Modules - _math.h (source / functions) Hit Total Coverage
Test: CPython 3.12 LCOV report [commit 5e6661bce9] Lines: 4 4 100.0 %
Date: 2023-03-20 08:15:36 Functions: 1 1 100.0 %
Branches: 2 2 100.0 %

           Branch data     Line data    Source code
       1                 :            : /* log1p(x) = log(1+x).  The log1p function is designed to avoid the
       2                 :            :    significant loss of precision that arises from direct evaluation when x is
       3                 :            :    small. Use the substitute from _math.h on all platforms: it includes
       4                 :            :    workarounds for buggy handling of zeros.
       5                 :            :  */
       6                 :            : 
       7                 :            : static double
       8                 :         60 : _Py_log1p(double x)
       9                 :            : {
      10                 :            :     /* Some platforms (e.g. MacOS X 10.8, see gh-59682) supply a log1p function
      11                 :            :        but don't respect the sign of zero:  log1p(-0.0) gives 0.0 instead of
      12                 :            :        the correct result of -0.0.
      13                 :            : 
      14                 :            :        To save fiddling with configure tests and platform checks, we handle the
      15                 :            :        special case of zero input directly on all platforms.
      16                 :            :     */
      17         [ +  + ]:         60 :     if (x == 0.0) {
      18                 :          2 :         return x;
      19                 :            :     }
      20                 :            :     else {
      21                 :         58 :         return log1p(x);
      22                 :            :     }
      23                 :            : }
      24                 :            : 
      25                 :            : #define m_log1p _Py_log1p

Generated by: LCOV version 1.14