This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
[12/12] Add femode_t functions: sparc
- From: Joseph Myers <joseph at codesourcery dot com>
- To: <libc-alpha at sourceware dot org>
- Cc: <davem at davemloft dot net>
- Date: Fri, 2 Sep 2016 21:59:17 +0000
- Subject: [12/12] Add femode_t functions: sparc
- Authentication-results: sourceware.org; auth=none
This patch adds SPARC versions of fegetmode and fesetmode. Untested.
2016-09-02 Joseph Myers <joseph@codesourcery.com>
* sysdeps/sparc/fpu/fegetmode.c: New file.
* sysdeps/sparc/fpu/fesetmode.c: Likewise.
diff --git a/sysdeps/sparc/fpu/fegetmode.c b/sysdeps/sparc/fpu/fegetmode.c
new file mode 100644
index 0000000..68e694e
--- /dev/null
+++ b/sysdeps/sparc/fpu/fegetmode.c
@@ -0,0 +1,26 @@
+/* Store current floating-point control modes. SPARC 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>
+
+int
+fegetmode (femode_t *modep)
+{
+ __fenv_stfsr (*modep);
+ return 0;
+}
diff --git a/sysdeps/sparc/fpu/fesetmode.c b/sysdeps/sparc/fpu/fesetmode.c
new file mode 100644
index 0000000..18ef90d
--- /dev/null
+++ b/sysdeps/sparc/fpu/fesetmode.c
@@ -0,0 +1,37 @@
+/* Install given floating-point control modes. SPARC 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>
+
+#define FPU_CONTROL_BITS 0xcfc00000UL
+
+int
+fesetmode (const femode_t *modep)
+{
+ femode_t fsr;
+
+ __fenv_stfsr (fsr);
+ if (modep == FE_DFL_ENV)
+ fsr = (fsr & ~FPU_CONTROL_BITS) | _FPU_DEFAULT;
+ else
+ fsr = (fsr & ~FPU_CONTROL_BITS) | (*modep & FPU_CONTROL_BITS);
+ __fenv_ldfsr (fsr);
+
+ return 0;
+}
--
Joseph S. Myers
joseph@codesourcery.com