Test remainderl() and remquol() as well.
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=177767
@ -1,5 +1,5 @@
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/*-
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* Copyright (c) 2005 David Schultz <das@FreeBSD.org>
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* Copyright (c) 2005-2008 David Schultz <das@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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@ -25,7 +25,8 @@
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*/
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/*
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* Test for remainder functions: remainder, remainderf, remquo, remquof.
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* Test for remainder functions: remainder, remainderf, remainderl,
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* remquo, remquof, and remquol.
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* Missing tests: fmod, fmodf.
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*/
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@ -33,16 +34,19 @@
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__FBSDID("$FreeBSD$");
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#include <assert.h>
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#include <float.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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static void test_invalid(double, double);
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static void test_invalid(long double, long double);
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static void testl(long double, long double, long double, int);
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static void testd(double, double, double, int);
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static void testf(float, float, float, int);
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#define test(x, y, e_r, e_q) do { \
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testl(x, y, e_r, e_q); \
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testd(x, y, e_r, e_q); \
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testf(x, y, e_r, e_q); \
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} while (0)
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@ -70,6 +74,10 @@ main(int argc, char *argv[])
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testd(275 * 1193040, 275, 0, 1193040);
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test(4.5 * 7.5, 4.5, -2.25, 8); /* we should get the even one */
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testf(0x1.9044f6p-1, 0x1.ce662ep-1, -0x1.f109cp-4, 1);
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#if LDBL_MANT_DIG > 53
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testl(-0x1.23456789abcdefp-2000L, 0x1.fedcba987654321p-2000L,
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0x1.b72ea61d950c862p-2001L, -1);
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#endif
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printf("ok 1 - rem\n");
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@ -92,7 +100,7 @@ main(int argc, char *argv[])
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}
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static void
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test_invalid(double x, double y)
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test_invalid(long double x, long double y)
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{
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int q;
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@ -109,6 +117,12 @@ test_invalid(double x, double y)
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#ifdef STRICT
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assert(q == 0xdeadbeef);
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#endif
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assert(isnan(remainderl(x, y)));
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assert(isnan(remquol(x, y, &q)));
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#ifdef STRICT
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assert(q == 0xdeadbeef);
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#endif
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}
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/* 0x012345 ==> 0x01ffff */
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@ -118,6 +132,22 @@ mask(int x)
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return ((unsigned)~0 >> (32 - fls(x)));
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}
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static void
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testl(long double x, long double y, long double expected_rem, int expected_quo)
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{
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int q;
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q = random();
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assert(remainderl(x, y) == expected_rem);
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assert(remquol(x, y, &q) == expected_rem);
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assert((q & 0x7) == (expected_quo & 0x7));
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if (q != 0) {
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assert((q > 0) ^ !(expected_quo > 0));
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q = abs(q);
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assert(q == (abs(expected_quo) & mask(q)));
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}
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}
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static void
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testd(double x, double y, double expected_rem, int expected_quo)
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{
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