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Index: lib/msun/tests/logarithm_test.c
===================================================================
--- lib/msun/tests/logarithm_test.c
+++ lib/msun/tests/logarithm_test.c
@@ -212,6 +212,17 @@
};
unsigned i;
+ long double log1p_ldbl_ulp = LDBL_ULP();
+#if LDBL_MANT_DIG > 64
+ /*
+ * On ld128 platforms the log1p() implementation provides less accuracy,
+ * but does still match the ld80 precision. Use the ld80 LDBL_ULP()
+ * value for now.
+ * Reported as https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253984
+ */
+ log1p_ldbl_ulp = ldexpl(1.0, 1 - 64);
+#endif
+
for (i = 0; i < nitems(tests); i++) {
test_tol(log2, tests[i].x, tests[i].log2x, DBL_ULP());
test_tol(log2f, tests[i].x, tests[i].log2x, FLT_ULP());
@@ -228,7 +239,7 @@
test_tol(log1pf, tests[i].x - 1, tests[i].logex,
FLT_ULP());
test_tol(log1pl, tests[i].x - 1, tests[i].logex,
- LDBL_ULP());
+ log1p_ldbl_ulp);
}
}
}
@@ -236,19 +247,30 @@
ATF_TC_WITHOUT_HEAD(log1p_accuracy_tests);
ATF_TC_BODY(log1p_accuracy_tests, tc)
{
+ long double ldbl_ulp = LDBL_ULP();
+#if LDBL_MANT_DIG > 64
+ /*
+ * On ld128 platforms the log1p() implementation provides less accuracy,
+ * but does still match the ld80 precision. Use the ld80 LDBL_ULP()
+ * value for now.
+ * Reported as https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253984
+ */
+ ldbl_ulp = ldexpl(1.0, 1 - 64);
+#endif
+
test_tol(log1pf, 0x0.333333p0F,
1.82321546859847114303367992804596800640e-1L, FLT_ULP());
test_tol(log1p, 0x0.3333333333333p0,
1.82321556793954589204283870982629267635e-1L, DBL_ULP());
test_tol(log1pl, 0x0.33333333333333332p0L,
- 1.82321556793954626202683007050468762914e-1L, LDBL_ULP());
+ 1.82321556793954626202683007050468762914e-1L, ldbl_ulp);
test_tol(log1pf, -0x0.333333p0F,
-2.23143536413048672940940199918017467652e-1L, FLT_ULP());
test_tol(log1p, -0x0.3333333333333p0,
-2.23143551314209700255143859052009022937e-1L, DBL_ULP());
test_tol(log1pl, -0x0.33333333333333332p0L,
- -2.23143551314209755752742563153765697950e-1L, LDBL_ULP());
+ -2.23143551314209755752742563153765697950e-1L, ldbl_ulp);
}
ATF_TP_ADD_TCS(tp)

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