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---
ieee-utils/fp-win.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++
ieee-utils/fp.c | 2 ++
2 files changed, 72 insertions(+)
create mode 100644 ieee-utils/fp-win.c
diff --git a/ieee-utils/fp-win.c b/ieee-utils/fp-win.c
new file mode 100644
index 0000000..e024eae
--- /dev/null
+++ b/ieee-utils/fp-win.c
@@ -0,0 +1,70 @@
+/* fp-win.c
+ *
+ * Author: Brian Gladman
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <float.h>
+
+#include <config.h>
+#include <gsl/gsl_ieee_utils.h>
+#include <gsl/gsl_errno.h>
+
+const char *fp_env_string = "round-to-nearest,double-precision,mask-all";
+
+int
+gsl_ieee_set_mode (int precision, int rounding, int exception_mask)
+{
+ unsigned int old, mode = _DN_SAVE, mask = _MCW_DN | _MCW_RC | _MCW_EM;
+
+ switch(precision)
+ {
+ case GSL_IEEE_SINGLE_PRECISION: mode |= _PC_24; break;
+ case GSL_IEEE_EXTENDED_PRECISION: mode |= _PC_64; break;
+ case GSL_IEEE_DOUBLE_PRECISION:
+ default: mode |= _PC_53;
+ }
+#ifndef _M_AMD64
+ mask |= _MCW_PC;
+#endif
+
+ switch(rounding)
+ {
+ case GSL_IEEE_ROUND_DOWN: mode |= _RC_DOWN; break;
+ case GSL_IEEE_ROUND_UP: mode |= _RC_UP; break;
+ case GSL_IEEE_ROUND_TO_ZERO: mode |= _RC_CHOP; break;
+ case GSL_IEEE_ROUND_TO_NEAREST:
+ default: mode |= _RC_NEAR;
+ }
+
+ if(exception_mask & GSL_IEEE_MASK_INVALID)
+ mode |= _EM_INVALID;
+ if(exception_mask & GSL_IEEE_MASK_DENORMALIZED)
+ mode |= _EM_DENORMAL;
+ if(exception_mask & GSL_IEEE_MASK_DIVISION_BY_ZERO)
+ mode |= _EM_ZERODIVIDE;
+ if(exception_mask & GSL_IEEE_MASK_OVERFLOW)
+ mode |= _EM_OVERFLOW;
+ if(exception_mask & GSL_IEEE_MASK_UNDERFLOW)
+ mode |= _EM_UNDERFLOW;
+ if(exception_mask & GSL_IEEE_TRAP_INEXACT)
+ mode &= ~_EM_INEXACT;
+ else
+ mode |= _EM_INEXACT;
+
+ _controlfp_s( &old, mode, mask);
+ return GSL_SUCCESS;
+}
diff --git a/ieee-utils/fp.c b/ieee-utils/fp.c
index 445a14f..b6ae5af 100644
--- a/ieee-utils/fp.c
+++ b/ieee-utils/fp.c
@@ -45,6 +45,8 @@
#endif
#elif HAVE_DECL_FEENABLEEXCEPT || HAVE_DECL_FESETTRAPENABLE
#include "fp-gnuc99.c"
+#elif _MSC_VER
+#include "fp-win.c"
#else
#include "fp-unknown.c"
#endif
--
|
