From f3d4659c79a6f256856ae330aaa619d10018c1ee Mon Sep 17 00:00:00 2001
From: Waldemar Brodkorb <wbx@openadk.org>
Date: Sun, 27 Apr 2025 06:09:13 +0200
Subject: sparc: add fenv support from glibc

---
 libm/sparc/fesetmode.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 libm/sparc/fesetmode.c

(limited to 'libm/sparc/fesetmode.c')

diff --git a/libm/sparc/fesetmode.c b/libm/sparc/fesetmode.c
new file mode 100644
index 000000000..e72b3d9df
--- /dev/null
+++ b/libm/sparc/fesetmode.c
@@ -0,0 +1,38 @@
+/* Install given floating-point control modes.  SPARC version.
+   Copyright (C) 2016-2025 Free Software Foundation, Inc.
+
+   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
+   <https://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include "fenv_private.h"
+#include <fpu_control.h>
+
+#define FPU_CONTROL_BITS 0xcfc00000UL
+
+int
+fesetmode (const femode_t *modep)
+{
+  femode_t fsr;
+
+  __fenv_stfsr (fsr);
+  fsr &= ~FPU_CONTROL_BITS;
+  if (modep == FE_DFL_MODE)
+    fsr |= _FPU_DEFAULT;
+  else
+    fsr |= *modep & FPU_CONTROL_BITS;
+  __fenv_ldfsr (fsr);
+
+  return 0;
+}
-- 
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