Mercurial > cpython-lru_cache-weakref
diff Modules/mathmodule.c @ 15181:2ed358446f2f legacy-trunk
Repaired a comment and asserted a precondition.
| author | Tim Peters <tim.peters@gmail.com> |
|---|---|
| date | Thu, 12 Oct 2000 19:42:00 +0000 |
| parents | 09c7ac188ce2 |
| children | bde1cf5740ec |
line wrap: on
line diff
--- a/Modules/mathmodule.c Thu Oct 12 19:31:13 2000 +0000 +++ b/Modules/mathmodule.c Thu Oct 12 19:42:00 2000 +0000 @@ -18,7 +18,7 @@ #endif /* RED_FLAG 12-Oct-2000 Tim - * What CHECK does if errno != 0 and x is a NaN is a platform-dependent crap + * What CHECK does if errno == 0 and x is a NaN is a platform-dependent crap * shoot. Most (but not all!) platforms will end up setting errno to ERANGE * then, but EDOM is probably better. */ @@ -38,6 +38,7 @@ is_error(double x) { int result = 1; /* presumption of guilt */ + assert(errno); /* non-zero errno is a precondition for calling */ if (errno == EDOM) PyErr_SetString(PyExc_ValueError, "math domain error"); else if (errno == ERANGE) {