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Diffstat (limited to 'lib/msun/tests/ilogb_test.c')
| -rw-r--r-- | lib/msun/tests/ilogb_test.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/lib/msun/tests/ilogb_test.c b/lib/msun/tests/ilogb_test.c new file mode 100644 index 000000000000..edcc9dc18278 --- /dev/null +++ b/lib/msun/tests/ilogb_test.c @@ -0,0 +1,101 @@ +/*- + * Copyright (c) 2004 Stefan Farfeleder + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <float.h> +#include <limits.h> +#include <math.h> +#include <stdio.h> +#include <stdlib.h> + +#include "test-utils.h" + +ATF_TC_WITHOUT_HEAD(ilogb); +ATF_TC_BODY(ilogb, tc) +{ + char buf[128], *end; + double d; + int e, i; + + ATF_CHECK_EQ(FP_ILOGB0, ilogb(0)); + ATF_CHECK_EQ(FP_ILOGBNAN, ilogb(NAN)); + ATF_CHECK_EQ(INT_MAX, ilogb(INFINITY)); + for (e = DBL_MIN_EXP - DBL_MANT_DIG; e < DBL_MAX_EXP; e++) { + snprintf(buf, sizeof(buf), "0x1.p%d", e); + d = strtod(buf, &end); + ATF_CHECK_EQ('\0', *end); + i = ilogb(d); + ATF_CHECK_EQ_MSG(e, i, "ilogb(%g) returned %d not %d", d, i, e); + } +} + +ATF_TC_WITHOUT_HEAD(ilogbf); +ATF_TC_BODY(ilogbf, tc) +{ + char buf[128], *end; + float f; + int e, i; + + ATF_CHECK_EQ(FP_ILOGB0, ilogbf(0)); + ATF_CHECK_EQ(FP_ILOGBNAN, ilogbf(NAN)); + ATF_CHECK_EQ(INT_MAX, ilogbf(INFINITY)); + for (e = FLT_MIN_EXP - FLT_MANT_DIG; e < FLT_MAX_EXP; e++) { + snprintf(buf, sizeof(buf), "0x1.p%d", e); + f = strtof(buf, &end); + ATF_CHECK_EQ('\0', *end); + i = ilogbf(f); + ATF_CHECK_EQ_MSG(e, i, "ilogbf(%g) returned %d not %d", f, i, + e); + } +} + +ATF_TC_WITHOUT_HEAD(ilogbl); +ATF_TC_BODY(ilogbl, tc) +{ + char buf[128], *end; + long double ld; + int e, i; + + ATF_CHECK_EQ(FP_ILOGB0, ilogbl(0)); + ATF_CHECK_EQ(FP_ILOGBNAN, ilogbl(NAN)); + ATF_CHECK_EQ(INT_MAX, ilogbl(INFINITY)); + for (e = LDBL_MIN_EXP - LDBL_MANT_DIG; e < LDBL_MAX_EXP; e++) { + snprintf(buf, sizeof(buf), "0x1.p%d", e); + ld = strtold(buf, &end); + ATF_CHECK_EQ('\0', *end); + i = ilogbl(ld); + ATF_CHECK_EQ_MSG(e, i, "ilogbl(%Lg) returned %d not %d", ld, i, + e); + } +} + +ATF_TP_ADD_TCS(tp) +{ + ATF_TP_ADD_TC(tp, ilogb); + ATF_TP_ADD_TC(tp, ilogbf); + ATF_TP_ADD_TC(tp, ilogbl); + + return (atf_no_error()); +} |