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, 0 insertions, 283 deletions

diff --git a/math/atest-sincos.c b/math/atest-sincos.c
deleted file mode 100644
index 94bb70441a..0000000000
--- a/math/atest-sincos.c
+++ /dev/null
@@ -1,283 +0,0 @@
-/* Copyright (C) 1997-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Geoffrey Keating <Geoff.Keating@anu.edu.au>, 1997.
-
-   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 <stdio.h>
-#include <math.h>
-#include <gmp.h>
-#include <string.h>
-#include <limits.h>
-#include <assert.h>
-
-#define PRINT_ERRORS 0
-
-#define N 0
-#define N2 20
-#define FRAC (32 * 4)
-
-#define mpbpl (CHAR_BIT * sizeof (mp_limb_t))
-#define SZ (FRAC / mpbpl + 1)
-typedef mp_limb_t mp1[SZ], mp2[SZ * 2];
-
-/* These strings have exactly 100 hex digits in them.  */
-static const char sin1[101] =
-"d76aa47848677020c6e9e909c50f3c3289e511132f518b4def"
-"b6ca5fd6c649bdfb0bd9ff1edcd4577655b5826a3d3b50c264";
-static const char cos1[101] =
-"8a51407da8345c91c2466d976871bd29a2373a894f96c3b7f2"
-"300240b760e6fa96a94430a52d0e9e43f3450e3b8ff99bc934";
-static const char hexdig[] = "0123456789abcdef";
-
-static void
-print_mpn_hex (const mp_limb_t *x, unsigned size)
-{
-   char value[size + 1];
-   unsigned i;
-   const unsigned final = (size * 4 > SZ * mpbpl) ? SZ * mpbpl / 4 : size;
-
-   memset (value, '0', size);
-
-   for (i = 0; i < final ; i++)
-     value[size-1-i] = hexdig[x[i * 4 / mpbpl] >> (i * 4) % mpbpl & 0xf];
-
-   value[size] = '\0';
-   fputs (value, stdout);
-}
-
-static void
-sincosx_mpn (mp1 si, mp1 co, mp1 xx, mp1 ix)
-{
-   int i;
-   mp2 s[4], c[4];
-   mp1 tmp, x;
-
-   if (ix == NULL)
-     {
-       memset (si, 0, sizeof (mp1));
-       memset (co, 0, sizeof (mp1));
-       co[SZ-1] = 1;
-       memcpy (x, xx, sizeof (mp1));
-     }
-   else
-      mpn_sub_n (x, xx, ix, SZ);
-
-   for (i = 0; i < 1 << N; i++)
-     {
-#define add_shift_mulh(d,x,s1,s2,sh,n) \
-      do { 								      \
-	 if (s2 != NULL) {						      \
-	    if (sh > 0) {						      \
-	       assert (sh < mpbpl);					      \
-	       mpn_lshift (tmp, s1, SZ, sh);				      \
-	       if (n)							      \
-	         mpn_sub_n (tmp,tmp,s2+FRAC/mpbpl,SZ);			      \
-	       else							      \
-	         mpn_add_n (tmp,tmp,s2+FRAC/mpbpl,SZ);			      \
-	    } else {							      \
-	       if (n)							      \
-	         mpn_sub_n (tmp,s1,s2+FRAC/mpbpl,SZ);			      \
-	       else							      \
-	         mpn_add_n (tmp,s1,s2+FRAC/mpbpl,SZ);			      \
-	    }								      \
-	    mpn_mul_n(d,tmp,x,SZ);					      \
-	 } else 							      \
-	    mpn_mul_n(d,s1,x,SZ);					      \
-	 assert(N+sh < mpbpl);						      \
-	 if (N+sh > 0) mpn_rshift(d,d,2*SZ,N+sh);			      \
-      } while(0)
-#define summ(d,ss,s,n) \
-      do { 								      \
-	 mpn_add_n(tmp,s[1]+FRAC/mpbpl,s[2]+FRAC/mpbpl,SZ);		      \
-	 mpn_lshift(tmp,tmp,SZ,1);					      \
-	 mpn_add_n(tmp,tmp,s[0]+FRAC/mpbpl,SZ);				      \
-	 mpn_add_n(tmp,tmp,s[3]+FRAC/mpbpl,SZ);				      \
-	 mpn_divmod_1(tmp,tmp,SZ,6);					      \
-	 if (n)								      \
-           mpn_sub_n (d,ss,tmp,SZ);					      \
-	 else								      \
-           mpn_add_n (d,ss,tmp,SZ);					      \
-      } while (0)
-
-      add_shift_mulh (s[0], x, co, NULL, 0, 0); /* s0 = h * c; */
-      add_shift_mulh (c[0], x, si, NULL, 0, 0); /* c0 = h * s; */
-      add_shift_mulh (s[1], x, co, c[0], 1, 1); /* s1 = h * (c - c0/2); */
-      add_shift_mulh (c[1], x, si, s[0], 1, 0); /* c1 = h * (s + s0/2); */
-      add_shift_mulh (s[2], x, co, c[1], 1, 1); /* s2 = h * (c - c1/2); */
-      add_shift_mulh (c[2], x, si, s[1], 1, 0); /* c2 = h * (s + s1/2); */
-      add_shift_mulh (s[3], x, co, c[2], 0, 1); /* s3 = h * (c - c2); */
-      add_shift_mulh (c[3], x, si, s[2], 0, 0); /* c3 = h * (s + s2); */
-      summ (si, si, s, 0);        /* s = s + (s0+2*s1+2*s2+s3)/6; */
-      summ (co, co, c, 1);        /* c = c - (c0+2*c1+2*c2+c3)/6; */
-   }
-#undef add_shift_mulh
-#undef summ
-}
-
-static int
-mpn_bitsize (const mp_limb_t *SRC_PTR, mp_size_t SIZE)
-{
-   int i, j;
-   for (i = SIZE - 1; i > 0; i--)
-     if (SRC_PTR[i] != 0)
-       break;
-   for (j = mpbpl - 1; j >= 0; j--)
-     if ((SRC_PTR[i] & (mp_limb_t)1 << j) != 0)
-       break;
-
-   return i * mpbpl + j;
-}
-
-static int
-do_test (void)
-{
-  mp1 si, co, x, ox, xt, s2, c2, s3, c3;
-  int i;
-  int sin_errors = 0, cos_errors = 0;
-  int sin_failures = 0, cos_failures = 0;
-  mp1 sin_maxerror, cos_maxerror;
-  int sin_maxerror_s = 0, cos_maxerror_s = 0;
-  const double sf = pow (2, mpbpl);
-
-  /* assert(mpbpl == mp_bits_per_limb);  */
-  assert(FRAC / mpbpl * mpbpl == FRAC);
-
-  memset (sin_maxerror, 0, sizeof (mp1));
-  memset (cos_maxerror, 0, sizeof (mp1));
-  memset (xt, 0, sizeof (mp1));
-  xt[(FRAC - N2) / mpbpl] = (mp_limb_t)1 << (FRAC - N2) % mpbpl;
-
-  for (i = 0; i < 1 << N2; i++)
-    {
-      int s2s, s3s, c2s, c3s, j;
-      double ds2,dc2;
-
-      mpn_mul_1 (x, xt, SZ, i);
-      sincosx_mpn (si, co, x, i == 0 ? NULL : ox);
-      memcpy (ox, x, sizeof (mp1));
-      ds2 = sin (i / (double) (1 << N2));
-      dc2 = cos (i / (double) (1 << N2));
-      for (j = SZ-1; j >= 0; j--)
-	{
-	  s2[j] = (mp_limb_t) ds2;
-	  ds2 = (ds2 - s2[j]) * sf;
-	  c2[j] = (mp_limb_t) dc2;
-	  dc2 = (dc2 - c2[j]) * sf;
-	}
-      if (mpn_cmp (si, s2, SZ) >= 0)
-	mpn_sub_n (s3, si, s2, SZ);
-      else
-	mpn_sub_n (s3, s2, si, SZ);
-      if (mpn_cmp (co, c2, SZ) >= 0)
-	mpn_sub_n (c3, co, c2, SZ);
-      else
-	mpn_sub_n (c3, c2, co, SZ);
-
-      s2s = mpn_bitsize (s2, SZ);
-      s3s = mpn_bitsize (s3, SZ);
-      c2s = mpn_bitsize (c2, SZ);
-      c3s = mpn_bitsize (c3, SZ);
-      if ((s3s >= 0 && s2s - s3s < 54)
-	  || (c3s >= 0 && c2s - c3s < 54)
-	  || 0)
-	{
-#if PRINT_ERRORS
-	  printf ("%06x ", i * (0x100000 / (1 << N2)));
-	  print_mpn_hex(si, (FRAC / 4) + 1);
-	  putchar (' ');
-	  print_mpn_hex (co, (FRAC / 4) + 1);
-	  putchar ('\n');
-	  fputs ("       ", stdout);
-	  print_mpn_hex (s2, (FRAC / 4) + 1);
-	  putchar (' ');
-	  print_mpn_hex (c2, (FRAC / 4) + 1);
-	  putchar ('\n');
-	  printf (" %c%c    ",
-		  s3s >= 0 && s2s-s3s < 54 ? s2s - s3s == 53 ? 'e' : 'F' : 'P',
-		  c3s >= 0 && c2s-c3s < 54 ? c2s - c3s == 53 ? 'e' : 'F' : 'P');
-	  print_mpn_hex (s3, (FRAC / 4) + 1);
-	  putchar (' ');
-	  print_mpn_hex (c3, (FRAC / 4) + 1);
-	  putchar ('\n');
-#endif
-	  sin_errors += s2s - s3s == 53;
-	  cos_errors += c2s - c3s == 53;
-	  sin_failures += s2s - s3s < 53;
-	  cos_failures += c2s - c3s < 53;
-	}
-      if (s3s >= sin_maxerror_s
-	  && mpn_cmp (s3, sin_maxerror, SZ) > 0)
-	{
-	  memcpy (sin_maxerror, s3, sizeof (mp1));
-	  sin_maxerror_s = s3s;
-	}
-      if (c3s >= cos_maxerror_s
-	  && mpn_cmp (c3, cos_maxerror, SZ) > 0)
-	{
-	  memcpy (cos_maxerror, c3, sizeof (mp1));
-	  cos_maxerror_s = c3s;
-	}
-    }
-
-   /* Check Range-Kutta against precomputed values of sin(1) and cos(1).  */
-   memset (x, 0, sizeof (mp1));
-   x[FRAC / mpbpl] = (mp_limb_t)1 << FRAC % mpbpl;
-   sincosx_mpn (si, co, x, ox);
-
-   memset (s2, 0, sizeof (mp1));
-   memset (c2, 0, sizeof (mp1));
-   for (i = 0; i < 100 && i < FRAC / 4; i++)
-     {
-       s2[(FRAC - i * 4 - 4) / mpbpl] |= ((mp_limb_t) (strchr (hexdig, sin1[i])
-						       - hexdig)
- 					  << (FRAC - i * 4 - 4) % mpbpl);
-       c2[(FRAC - i * 4 - 4) / mpbpl] |= ((mp_limb_t) (strchr (hexdig, cos1[i])
-						       - hexdig)
-					  << (FRAC - i * 4 - 4) % mpbpl);
-     }
-
-   if (mpn_cmp (si, s2, SZ) >= 0)
-     mpn_sub_n (s3, si, s2, SZ);
-   else
-     mpn_sub_n (s3, s2, si, SZ);
-   if (mpn_cmp (co, c2, SZ) >= 0)
-      mpn_sub_n (c3, co, c2, SZ);
-   else
-     mpn_sub_n (c3, c2, co, SZ);
-
-   printf ("sin:\n");
-   printf ("%d failures; %d errors; error rate %0.2f%%\n",
-	   sin_failures, sin_errors, sin_errors * 100.0 / (double) (1 << N2));
-   fputs ("maximum error:   ", stdout);
-   print_mpn_hex (sin_maxerror, (FRAC / 4) + 1);
-   fputs ("\nerror in sin(1): ", stdout);
-   print_mpn_hex (s3, (FRAC / 4) + 1);
-
-   fputs ("\n\ncos:\n", stdout);
-   printf ("%d failures; %d errors; error rate %0.2f%%\n",
-	   cos_failures, cos_errors, cos_errors * 100.0 / (double) (1 << N2));
-   fputs ("maximum error:   ", stdout);
-   print_mpn_hex (cos_maxerror, (FRAC / 4) + 1);
-   fputs ("\nerror in cos(1): ", stdout);
-   print_mpn_hex (c3, (FRAC / 4) + 1);
-   putchar ('\n');
-
-   return (sin_failures == 0 && cos_failures == 0) ? 0 : 1;
-}
-
-#define TIMEOUT 600
-#define TEST_FUNCTION do_test ()
-#include "../test-skeleton.c"