Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 50 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/alpha/fpu/math_private.h b/REORG.TODO/sysdeps/alpha/fpu/math_private.h
new file mode 100644
index 0000000000..1e97c867c3
--- /dev/null
+++ b/REORG.TODO/sysdeps/alpha/fpu/math_private.h
@@ -0,0 +1,50 @@
+#ifndef ALPHA_MATH_PRIVATE_H
+#define ALPHA_MATH_PRIVATE_H 1
+
+/* In bits/mathinline.h we define __isnan et al.
+   In sysdeps/alpha/fpu/s_isnan.c we move the identifier out of the way
+   via macro hackery.  In both cases, tell math/math_private.h that
+   we have a local copy of the function.  */
+
+#ifndef __isnan
+# define __isnan  __isnan
+#endif
+#ifndef __isnanf
+# define __isnanf __isnanf
+#endif
+
+/* Generic code forces values to memory; we don't need to do that.  */
+#define math_opt_barrier(x) \
+  ({ __typeof (x) __x = (x); __asm ("" : "+frm" (__x)); __x; })
+#define math_force_eval(x) \
+  ({ __typeof (x) __x = (x); __asm __volatile__ ("" : : "frm" (__x)); })
+
+#include_next <math_private.h>
+
+#ifdef __alpha_fix__
+extern __always_inline double
+__ieee754_sqrt (double d)
+{
+  double ret;
+# ifdef _IEEE_FP_INEXACT
+  asm ("sqrtt/suid %1,%0" : "=&f"(ret) : "f"(d));
+# else
+  asm ("sqrtt/sud %1,%0" : "=&f"(ret) : "f"(d));
+# endif
+  return ret;
+}
+
+extern __always_inline float
+__ieee754_sqrtf (float d)
+{
+  float ret;
+# ifdef _IEEE_FP_INEXACT
+  asm ("sqrts/suid %1,%0" : "=&f"(ret) : "f"(d));
+# else
+  asm ("sqrts/sud %1,%0" : "=&f"(ret) : "f"(d));
+# endif
+  return ret;
+}
+#endif /* FIX */
+
+#endif /* ALPHA_MATH_PRIVATE_H */