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[10/12] Add femode_t functions: s390
- From: Joseph Myers <joseph at codesourcery dot com>
- To: <libc-alpha at sourceware dot org>
- Cc: <stli at linux dot vnet dot ibm dot com>
- Date: Fri, 2 Sep 2016 21:58:37 +0000
- Subject: [10/12] Add femode_t functions: s390
- Authentication-results: sourceware.org; auth=none
This patch adds S/390 versions of fegetmode and fesetmode. Untested.
2016-09-02 Joseph Myers <joseph@codesourcery.com>
* sysdeps/s390/fpu/fegetmode.c: New file.
* sysdeps/s390/fpu/fesetmode.c: Likewise.
diff --git a/sysdeps/s390/fpu/fegetmode.c b/sysdeps/s390/fpu/fegetmode.c
new file mode 100644
index 0000000..a6e67c2
--- /dev/null
+++ b/sysdeps/s390/fpu/fegetmode.c
@@ -0,0 +1,27 @@
+/* Store current floating-point control modes. S/390 version.
+ Copyright (C) 2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fegetmode (femode_t *modep)
+{
+ _FPU_GETCW (*modep);
+ return 0;
+}
diff --git a/sysdeps/s390/fpu/fesetmode.c b/sysdeps/s390/fpu/fesetmode.c
new file mode 100644
index 0000000..8feb9b6
--- /dev/null
+++ b/sysdeps/s390/fpu/fesetmode.c
@@ -0,0 +1,38 @@
+/* Install given floating-point control modes. S/390 version.
+ Copyright (C) 2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include <fpu_control.h>
+#include <fenv_libc.h>
+
+#define FPC_STATUS (FPC_FLAGS_MASK | FPC_DXC_MASK)
+
+int
+fesetmode (const femode_t *modep)
+{
+ fpu_control_t fpc;
+
+ _FPU_GETCW (fpc);
+ if (modep == FE_DFL_ENV)
+ fpc = (fpc & FPC_STATUS) | _FPU_DEFAULT;
+ else
+ fpc = (fpc & FPC_STATUS) | (*modep & ~FPC_STATUS);
+ _FPU_SETCW (fpc);
+
+ return 0;
+}
--
Joseph S. Myers
joseph@codesourcery.com