From dd7f470327139a88019b2c5ded8fc2811b0fed00 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Fri, 16 Mar 2012 03:05:49 -0700
Subject: Implement optimized libc_fe*() math routines on sparc.

	* sysdeps/sparc/fpu/math_private.h: New file.
---
 sysdeps/sparc/fpu/math_private.h | 68 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 sysdeps/sparc/fpu/math_private.h

(limited to 'sysdeps/sparc/fpu')

diff --git a/sysdeps/sparc/fpu/math_private.h b/sysdeps/sparc/fpu/math_private.h
new file mode 100644
index 0000000..05ef623
--- /dev/null
+++ b/sysdeps/sparc/fpu/math_private.h
@@ -0,0 +1,68 @@
+#ifndef SPARC_MATH_PRIVATE_H
+#define SPARC_MATH_PRIVATE_H 1
+
+#include_next <math_private.h>
+#include <fenv.h>
+
+#undef libc_feholdexcept
+#define libc_feholdexcept(e) \
+  do {							\
+     fenv_t etmp;					\
+     __fenv_stfsr(etmp);				\
+     *(e) = etmp;					\
+     etmp = etmp & ~((0x1f << 23) | FE_ALL_EXCEPT);	\
+     __fenv_ldfsr(etmp);				\
+  } while (0)
+#undef libc_feholdexceptf
+#define libc_feholdexceptf(e) libc_feholdexcept (e)
+#undef libc_feholdexceptl
+#define libc_feholdexceptl(e) libc_feholdexcept (e)
+
+#undef libc_feholdexcept_setround
+#define libc_feholdexcept_setround(e, r) \
+  do {							\
+     fenv_t etmp;					\
+     __fenv_stfsr(etmp);				\
+     *(e) = etmp;					\
+     etmp = etmp & ~((0x1f << 23) | FE_ALL_EXCEPT);	\
+     etmp = (etmp & ~__FE_ROUND_MASK) | (r);		\
+     __fenv_ldfsr(etmp);				\
+  } while (0)
+#undef libc_feholdexcept_setroundf
+#define libc_feholdexcept_setroundf(e, r) libc_feholdexcept_setround (e, r)
+#undef libc_feholdexcept_setroundl
+#define libc_feholdexcept_setroundl(e, r) libc_feholdexcept_setround (e, r)
+
+#undef libc_fetestexcept
+#define libc_fetestexcept(e) \
+  ({							\
+     fenv_t etmp;					\
+     __fenv_stfsr(etmp);				\
+     etmp & (e) & FE_ALL_EXCEPT; })
+#undef libc_fetestexceptf
+#define libc_fetestexceptf(e) libc_fetestexcept (e)
+#undef libc_fetestexceptl
+#define libc_fetestexceptl(e) libc_fetestexcept (e)
+
+#undef libc_fesetenv
+#define libc_fesetenv(e) \
+  __fenv_ldfsr(*e)
+#undef libc_fesetenvf
+#define libc_fesetenvf(e) libc_fesetenv (e)
+#undef libc_fesetenvl
+#define libc_fesetenvl(e) libc_fesetenv (e)
+
+#undef libc_feupdateenv
+#define libc_feupdateenv(e) \
+  do {						\
+     fenv_t etmp;				\
+     __fenv_stfsr(etmp);			\
+     __fenv_ldfsr(*e);				\
+     __feraiseexcept (etmp & FE_ALL_EXCEPT);	\
+  } while (0)
+#undef libc_feupdateenvf
+#define libc_feupdateenvf(e) libc_feupdateenv (e)
+#undef libc_feupdateenvl
+#define libc_feupdateenvl(e) libc_feupdateenv (e)
+
+#endif /* SPARC_MATH_PRIVATE_H */
-- 
cgit v1.1