Replace finite() with std::isfinite(). (#1341)

Summary: Pull Request resolved: https://github.com/facebookresearch/faiss/pull/1341

Test Plan: Imported from OSS

Reviewed By: mdouze

Differential Revision: D23234968

Pulled By: beauby

fbshipit-source-id: f7ba7bd473e05f2ba4d0ca555bc78965f5aa3fd1

faiss/Clustering.cpp

@@ -289,7 +289,7 @@ void Clustering::train_encoded (idx_t nx, const uint8_t *x_in,
         // reports.
         const float *x = reinterpret_cast<const float *>(x_in);
         for (size_t i = 0; i < nx * d; i++) {
-            FAISS_THROW_IF_NOT_MSG (finite (x[i]),
+            FAISS_THROW_IF_NOT_MSG (std::isfinite (x[i]),
                                     "input contains NaN's or Inf's");
         }
     }