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102 lines
3 KiB
C
102 lines
3 KiB
C
/*-
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* Copyright (c) 2004 Stefan Farfeleder
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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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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <float.h>
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#include <limits.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 "test-utils.h"
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ATF_TC_WITHOUT_HEAD(ilogb);
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ATF_TC_BODY(ilogb, tc)
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{
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char buf[128], *end;
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double d;
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int e, i;
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ATF_CHECK_EQ(FP_ILOGB0, ilogb(0));
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ATF_CHECK_EQ(FP_ILOGBNAN, ilogb(NAN));
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ATF_CHECK_EQ(INT_MAX, ilogb(INFINITY));
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for (e = DBL_MIN_EXP - DBL_MANT_DIG; e < DBL_MAX_EXP; e++) {
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snprintf(buf, sizeof(buf), "0x1.p%d", e);
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d = strtod(buf, &end);
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ATF_CHECK_EQ('\0', *end);
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i = ilogb(d);
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ATF_CHECK_EQ_MSG(e, i, "ilogb(%g) returned %d not %d", d, i, e);
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}
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}
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ATF_TC_WITHOUT_HEAD(ilogbf);
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ATF_TC_BODY(ilogbf, tc)
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{
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char buf[128], *end;
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float f;
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int e, i;
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ATF_CHECK_EQ(FP_ILOGB0, ilogbf(0));
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ATF_CHECK_EQ(FP_ILOGBNAN, ilogbf(NAN));
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ATF_CHECK_EQ(INT_MAX, ilogbf(INFINITY));
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for (e = FLT_MIN_EXP - FLT_MANT_DIG; e < FLT_MAX_EXP; e++) {
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snprintf(buf, sizeof(buf), "0x1.p%d", e);
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f = strtof(buf, &end);
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ATF_CHECK_EQ('\0', *end);
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i = ilogbf(f);
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ATF_CHECK_EQ_MSG(e, i, "ilogbf(%g) returned %d not %d", f, i,
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e);
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}
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}
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ATF_TC_WITHOUT_HEAD(ilogbl);
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ATF_TC_BODY(ilogbl, tc)
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{
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char buf[128], *end;
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long double ld;
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int e, i;
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ATF_CHECK_EQ(FP_ILOGB0, ilogbl(0));
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ATF_CHECK_EQ(FP_ILOGBNAN, ilogbl(NAN));
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ATF_CHECK_EQ(INT_MAX, ilogbl(INFINITY));
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for (e = LDBL_MIN_EXP - LDBL_MANT_DIG; e < LDBL_MAX_EXP; e++) {
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snprintf(buf, sizeof(buf), "0x1.p%d", e);
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ld = strtold(buf, &end);
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ATF_CHECK_EQ('\0', *end);
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i = ilogbl(ld);
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ATF_CHECK_EQ_MSG(e, i, "ilogbl(%Lg) returned %d not %d", ld, i,
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e);
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}
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, ilogb);
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ATF_TP_ADD_TC(tp, ilogbf);
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ATF_TP_ADD_TC(tp, ilogbl);
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return (atf_no_error());
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}
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