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| author | Kristján Valur Jónsson <kristjan@ccpgames.com> | 2006-05-25 15:53:30 (GMT) |
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| committer | Kristján Valur Jónsson <kristjan@ccpgames.com> | 2006-05-25 15:53:30 (GMT) |
| commit | f94323fbb4e83b756b1f328f06a1615d8c366c20 (patch) | |
| tree | 0162fcea03d1e3ba5aeec93b1cff612dd19c01d7 /Include | |
| parent | 4b4e33ef14cecd0bc9c6566ea8b402733e7e445f (diff) | |
| download | cpython-f94323fbb4e83b756b1f328f06a1615d8c366c20.zip cpython-f94323fbb4e83b756b1f328f06a1615d8c366c20.tar.gz cpython-f94323fbb4e83b756b1f328f06a1615d8c366c20.tar.bz2 | |
Added a new macro, Py_IS_FINITE(X). On windows there is an intrinsic for this and it is more efficient than to use !Py_IS_INFINITE(X) && !Py_IS_NAN(X). No change on other platforms
Diffstat (limited to 'Include')
| -rw-r--r-- | Include/pyport.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Include/pyport.h b/Include/pyport.h index df44be6..66726e8 100644 --- a/Include/pyport.h +++ b/Include/pyport.h @@ -295,6 +295,15 @@ extern "C" { #define Py_IS_INFINITY(X) ((X) && (X)*0.5 == (X)) #endif +/* Py_IS_INFINITY(X) + * Return 1 if float or double arg is an infinity, else 0. + * This some archicetcures (windows) have intrisics for this, so a special + * macro for this particular test is useful + */ +#ifndef Py_IS_FINITE +#define Py_IS_FINITE(X) (!Py_IS_INFINITY(X) && !Py_IS_NAN(X)) +#endif + /* HUGE_VAL is supposed to expand to a positive double infinity. Python * uses Py_HUGE_VAL instead because some platforms are broken in this * respect. We used to embed code in pyport.h to try to worm around that, |