added gmx_is_{single,double}_precision

* allows easy detection of the precision for cmake, autotools
  without parsing the output of gmx_print_version_info (no
  cross-compile support) or the output of strings command (unix
  only)
* linking against libgmx with/out -DGMX_DOUBLE will lead to
  unpredictable segfaults

Change-Id: I472f10ae374a1f42c94c55e156b53f8905bdf098

diff --git a/src/gmxlib/copyrite.c b/src/gmxlib/copyrite.c
index f7ede977cbd95ffdcf22f04b970c0833014e6470..077e755212d242c06ddddb3f87fc41ed4a50e645 100644 (file)
--- a/src/gmxlib/copyrite.c
+++ b/src/gmxlib/copyrite.c
@@ -771,3 +771,15 @@ void gmx_print_version_info(FILE *fp)
     gmx_print_version_info_gpu(fp);
 #endif
 }
+
+#ifdef GMX_DOUBLE
+void gmx_is_double_precision()
+{
+    /* allow precision detection */
+}
+#else
+void gmx_is_single_precision()
+{
+    /* allow precision detection */
+}
+#endif