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df152cc80e
* stdlib/jrand48_r.c (__jrand48_r): Correct constructing of results. Reported by Jeff Higham <jhigham@algorithmics.com>. * stdlib/tst-rand48.c: New file. * stdlib/Makefile (tests): Add tst-rand48.
391 lines
9.4 KiB
C
391 lines
9.4 KiB
C
#include <float.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifndef DECIMAL_DIG
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# define DECIMAL_DIG 21
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#endif
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int
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main (void)
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{
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unsigned short int xs[3] = { 0x0001, 0x0012, 0x0123 };
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unsigned short int lxs[7];
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unsigned short int *xsp;
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int result = 0;
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long int l;
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double d;
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double e;
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/* Test srand48. */
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srand48 (0x98765432);
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/* Get the values of the internal Xi array. */
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xsp = seed48 (xs);
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if (xsp[0] != 0x330e || xsp[1] != 0x5432 || xsp[2] != 0x9876)
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{
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puts ("srand48(0x98765432) didn't set correct value");
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printf (" expected: { %04hx, %04hx, %04hx }\n", 0x330e, 0x5432, 0x9876);
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printf (" seen: { %04hx, %04hx, %04hx }\n", xsp[0], xsp[1], xsp[2]);
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result = 1;
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}
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/* Put the values back. */
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memcpy (xs, xsp, sizeof (xs));
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(void) seed48 (xs);
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/* See whether the correct values are installed. */
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l = lrand48 ();
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if (l != 0x2fed1413l)
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{
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printf ("lrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x2fed1413l, l);
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result = 1;
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}
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l = mrand48 ();
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if (l != 0xa28c1003l)
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{
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printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0xa28c1003l, l);
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result = 1;
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}
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l = lrand48 ();
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if (l != 0x585fcfb7l)
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{
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printf ("lrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x585fcfb7l, l);
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result = 1;
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}
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l = mrand48 ();
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if (l != 0x9e88f474l)
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{
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printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x9e88f474l, l);
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result = 1;
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}
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/* Test seed48. The previous call should have install the values in
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the initialization of `xs' above. */
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xs[0] = 0x1234;
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xs[1] = 0x5678;
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xs[2] = 0x9012;
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xsp = seed48 (xs);
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if (xsp[0] != 0x62f2 || xsp[1] != 0xf474 || xsp[2] != 0x9e88)
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{
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puts ("seed48() did not install the values correctly");
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printf (" expected: { %04hx, %04hx, %04hx }\n", 0x62f2, 0xf474, 0x9e88);
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printf (" seen: { %04hx, %04hx, %04hx }\n", xsp[0], xsp[1], xsp[2]);
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result = 1;
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}
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/* Test lrand48 and mrand48. We continue from the seed established
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above. */
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l = lrand48 ();
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if (l != 0x017e48b5l)
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{
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printf ("lrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x017e48b5l, l);
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result = 1;
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}
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l = mrand48 ();
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if (l != 0xeb7a1fa3l)
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{
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printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0xeb7a1fa3l, l);
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result = 1;
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}
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l = lrand48 ();
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if (l != 0x6b6a3f95l)
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{
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printf ("lrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x6b6a3f95l, l);
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result = 1;
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}
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l = mrand48 ();
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if (l != 0x175c0d6fl)
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{
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printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x175c0d6fl, l);
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result = 1;
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}
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/* Test lcong48. */
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lxs[0] = 0x4567;
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lxs[1] = 0x6789;
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lxs[2] = 0x8901;
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lxs[3] = 0x0123;
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lxs[4] = 0x2345;
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lxs[5] = 0x1111;
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lxs[6] = 0x2222;
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lcong48 (lxs);
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/* See whether the correct values are installed. */
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l = lrand48 ();
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if (l != 0x6df63d66l)
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{
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printf ("lrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x6df63d66l, l);
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result = 1;
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}
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l = mrand48 ();
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if (l != 0x2f92c8e1l)
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{
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printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x2f92c8e1l, l);
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result = 1;
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}
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l = lrand48 ();
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if (l != 0x3b4869ffl)
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{
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printf ("lrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x3b4869ffl, l);
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result = 1;
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}
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l = mrand48 ();
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if (l != 0x5cd4cc3el)
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{
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printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x5cd4cc3el, l);
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result = 1;
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}
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/* Check whether srand48() restores the A and C parameters. */
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srand48 (0x98765432);
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/* See whether the correct values are installed. */
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l = lrand48 ();
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if (l != 0x2fed1413l)
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{
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printf ("lrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x2fed1413l, l);
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result = 1;
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}
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l = mrand48 ();
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if (l != 0xa28c1003l)
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{
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printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0xa28c1003l, l);
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result = 1;
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}
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l = lrand48 ();
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if (l != 0x585fcfb7l)
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{
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printf ("lrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x585fcfb7l, l);
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result = 1;
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}
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l = mrand48 ();
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if (l != 0x9e88f474l)
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{
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printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x9e88f474l, l);
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result = 1;
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}
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/* And again to see whether seed48() does the same. */
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lcong48 (lxs);
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/* See whether lxs wasn't modified. */
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l = lrand48 ();
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if (l != 0x6df63d66l)
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{
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printf ("lrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x6df63d66l, l);
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result = 1;
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}
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/* Test seed48. The previous call should have install the values in
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the initialization of `xs' above. */
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xs[0] = 0x1234;
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xs[1] = 0x5678;
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xs[2] = 0x9012;
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xsp = seed48 (xs);
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if (xsp[0] != 0x0637 || xsp[1] != 0x7acd || xsp[2] != 0xdbec)
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{
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puts ("seed48() did not install the values correctly");
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printf (" expected: { %04hx, %04hx, %04hx }\n", 0x0637, 0x7acd, 0xdbec);
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printf (" seen: { %04hx, %04hx, %04hx }\n", xsp[0], xsp[1], xsp[2]);
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result = 1;
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}
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/* Test lrand48 and mrand48. We continue from the seed established
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above. */
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l = lrand48 ();
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if (l != 0x017e48b5l)
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{
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printf ("lrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x017e48b5l, l);
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result = 1;
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}
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l = mrand48 ();
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if (l != 0xeb7a1fa3l)
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{
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printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0xeb7a1fa3l, l);
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result = 1;
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}
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l = lrand48 ();
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if (l != 0x6b6a3f95l)
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{
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printf ("lrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x6b6a3f95l, l);
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result = 1;
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}
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l = mrand48 ();
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if (l != 0x175c0d6fl)
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{
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printf ("mrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x175c0d6fl, l);
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result = 1;
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}
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/* Test drand48. */
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d = drand48 ();
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if (d != 0.0908832261858485424)
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{
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printf ("drand48() in line %d failed: expected %.*g, seen %.*g\n",
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__LINE__ - 4, DECIMAL_DIG, 0.0908832261858485424,
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DECIMAL_DIG, d);
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result = 1;
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}
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d = drand48 ();
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if (d != 0.943149381730059133133)
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{
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printf ("drand48() in line %d failed: expected %.*g, seen %.*g\n",
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__LINE__ - 4, DECIMAL_DIG, 0.943149381730059133133,
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DECIMAL_DIG, d);
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result = 1;
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}
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/* Now the functions which get the Xis passed. */
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xs[0] = 0x3849;
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xs[1] = 0x5061;
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xs[2] = 0x7283;
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l = nrand48 (xs);
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if (l != 0x1efe61a1l)
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{
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printf ("nrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x1efe61a1l, l);
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result = 1;
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}
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l = jrand48 (xs);
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if (l != 0xf568c7a0l)
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{
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printf ("jrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0xf568c7a0l, l);
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result = 1;
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}
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l = nrand48 (xs);
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if (l != 0x2a5e57fel)
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{
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printf ("nrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x2a5e57fel, l);
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result = 1;
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}
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l = jrand48 (xs);
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if (l != 0x71a779a8l)
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{
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printf ("jrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x71a779a8l, l);
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result = 1;
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}
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/* Test whether the global A and C are used. */
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lcong48 (lxs);
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l = nrand48 (xs);
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if (l != 0x32beee9fl)
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{
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printf ("nrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x32beee9fl, l);
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result = 1;
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}
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l = jrand48 (xs);
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if (l != 0x7bddf3bal)
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{
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printf ("jrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x7bddf3bal, l);
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result = 1;
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}
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l = nrand48 (xs);
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if (l != 0x85bdf28l)
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{
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printf ("nrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x85bdf28l, l);
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result = 1;
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}
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l = jrand48 (xs);
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if (l != 0x7b433e47l)
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{
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printf ("jrand48() in line %d failed: expected %lx, seen %lx\n",
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__LINE__ - 4, 0x7b433e47l, l);
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result = 1;
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}
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/* Test erand48. Also compare with the drand48 results. */
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(void) seed48 (xs);
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d = drand48 ();
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e = erand48 (xs);
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if (d != e)
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{
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printf ("\
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drand48() and erand48 in lines %d and %d produce different results\n",
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__LINE__ - 6, __LINE__ - 5);
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printf (" drand48() = %g, erand48() = %g\n", d, e);
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result = 1;
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}
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else if (e != 0.640650904452755298735)
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{
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printf ("erand48() in line %d failed: expected %.*g, seen %.*g\n",
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__LINE__ - 4, DECIMAL_DIG, 0.640650904452755298735,
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DECIMAL_DIG, e);
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result = 1;
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}
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d = drand48 ();
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e = erand48 (xs);
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if (d != e)
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{
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printf ("\
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drand48() and erand48 in lines %d and %d produce different results\n",
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__LINE__ - 6, __LINE__ - 5);
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printf (" drand48() = %g, erand48() = %g\n", d, e);
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result = 1;
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}
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else if (e != 0.115372323508150742555)
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{
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printf ("erand48() in line %d failed: expected %.*g, seen %.*g\n",
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__LINE__ - 4, DECIMAL_DIG, 0.0115372323508150742555,
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DECIMAL_DIG, e);
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result = 1;
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}
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return result;
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}
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