mirror of
https://github.com/microsoft/vcpkg.git
synced 2024-11-24 21:29:08 +08:00
98 lines
2.9 KiB
Diff
98 lines
2.9 KiB
Diff
---
|
|
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
|
|
--
|
|
|