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GNU C Library master sources branch master updated. glibc-2.16-ports-merge-582-g473611b
- From: jsm28 at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 1 Nov 2012 16:47:41 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.16-ports-merge-582-g473611b
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- Log -----------------------------------------------------------------
http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=473611b22d630a5cbb870d2a7edf08071d4d8ace
commit 473611b22d630a5cbb870d2a7edf08071d4d8ace
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 1 16:47:26 2012 +0000
Fix fma (a, b, c) for small a * b (bugs 14784, 14785).
diff --git a/ChangeLog b/ChangeLog
index b205a57..a042ebf 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+2012-11-01 Joseph Myers <joseph@codesourcery.com>
+
+ [BZ #14784]
+ [BZ #14785]
+ * sysdeps/ieee754/dbl-64/s_fma.c (__fma): Handle cases with small
+ x * y using scaling, not as x * y + z.
+ * sysdeps/ieee754/ldbl-128/s_fmal.c (__fmal): Likewise.
+ * sysdeps/ieee754/ldbl-96/s_fmal.c (__fmal): Likewise.
+ * math/libm-test.inc (fma_test): Add more tests.
+ (fma_test_towardzero): Likewise.
+ (fma_test_downward): Likewise.
+ (fma_test_upward): Likewise.
+
2012-11-01 Thomas Schwinge <thomas@codesourcery.com>
* sysdeps/mach/hurd/bits/param.h: Remove stray #endif.
diff --git a/NEWS b/NEWS
index 8b691e5..12184f8 100644
--- a/NEWS
+++ b/NEWS
@@ -17,7 +17,7 @@ Version 2.17
14459, 14476, 14477, 14505, 14510, 14516, 14518, 14519, 14530, 14532,
14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576, 14579, 14583,
14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648, 14652, 14660,
- 14661, 14683, 14694, 14716, 14743, 14767, 14783.
+ 14661, 14683, 14694, 14716, 14743, 14767, 14783, 14784, 14785.
* Support for STT_GNU_IFUNC symbols added for s390 and s390x.
Optimized versions of memcpy, memset, and memcmp added for System z10 and
diff --git a/math/libm-test.inc b/math/libm-test.inc
index 9c77392..258c960 100644
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -4633,6 +4633,22 @@ fma_test (void)
TEST_fff_f (fma, -0x1p-149, 0x1p-1, -0x0.fffffep-126, -0x1p-126, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-149, 0x1.1p-1, 0x0.fffffep-126, 0x1p-126, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, -0x1p-149, 0x1.1p-1, -0x0.fffffep-126, -0x1p-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x1p127, 0x1p127);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p127, 0x1p127);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p127, -0x1p127);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p127, -0x1p127);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x1p-126, 0x1p-126);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p-126, 0x1p-126, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p-126, -0x1p-126, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p-126, -0x1p-126);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x0.fffffep-126, 0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x0.fffffep-126, 0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x0.fffffep-126, -0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x0.fffffep-126, -0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x1p-149, 0x1p-149, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p-149, 0x1p-149, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p-149, -0x1p-149, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p-149, -0x1p-149, UNDERFLOW_EXCEPTION);
#endif
#if defined (TEST_DOUBLE) && DBL_MANT_DIG == 53
TEST_fff_f (fma, 0x1.7fp+13, 0x1.0000000000001p+0, 0x1.ffep-48, 0x1.7f00000000001p+13);
@@ -4663,6 +4679,22 @@ fma_test (void)
TEST_fff_f (fma, -0x1p-1074, 0x1p-1, -0x0.fffffffffffffp-1022, -0x1p-1022, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-1074, 0x1.1p-1, 0x0.fffffffffffffp-1022, 0x1p-1022, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, -0x1p-1074, 0x1.1p-1, -0x0.fffffffffffffp-1022, -0x1p-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x1p1023, 0x1p1023);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p1023, 0x1p1023);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p1023, -0x1p1023);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p1023, -0x1p1023);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x1p-1022, 0x1p-1022);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p-1022, 0x1p-1022, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p-1022, -0x1p-1022, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p-1022, -0x1p-1022);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x0.fffffffffffffp-1022, 0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x0.fffffffffffffp-1022, 0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x0.fffffffffffffp-1022, -0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x0.fffffffffffffp-1022, -0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x1p-1074, 0x1p-1074, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p-1074, 0x1p-1074, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p-1074, -0x1p-1074, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p-1074, -0x1p-1074, UNDERFLOW_EXCEPTION);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 64
TEST_fff_f (fma, -0x8.03fcp+3696L, 0xf.fffffffffffffffp-6140L, 0x8.3ffffffffffffffp-2450L, -0x8.01ecp-2440L);
@@ -4679,6 +4711,22 @@ fma_test (void)
TEST_fff_f (fma, -0x1p-16445L, 0x1p-1L, -0x0.fffffffffffffffep-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16445L, 0x1.1p-1L, 0x0.fffffffffffffffep-16382L, 0x1p-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, -0x1p-16445L, 0x1.1p-1L, -0x0.fffffffffffffffep-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x1p16383L, 0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p16383L, 0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p16383L, -0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p16383L, -0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x1p-16382L, 0x1p-16382L);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p-16382L, 0x1p-16382L, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p-16382L, -0x1p-16382L);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x0.fffffffffffffffep-16382L, 0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x0.fffffffffffffffep-16382L, 0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x0.fffffffffffffffep-16382L, -0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x0.fffffffffffffffep-16382L, -0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x1p-16445L, 0x1p-16445L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p-16445L, 0x1p-16445L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p-16445L, -0x1p-16445L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p-16445L, -0x1p-16445L, UNDERFLOW_EXCEPTION);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 113
TEST_fff_f (fma, 0x1.bb2de33e02ccbbfa6e245a7c1f71p-2584L, -0x1.6b500daf0580d987f1bc0cadfcddp-13777L, 0x1.613cd91d9fed34b33820e5ab9d8dp-16378L, -0x1.3a79fb50eb9ce887cffa0f09bd9fp-16360L);
@@ -4702,6 +4750,22 @@ fma_test (void)
TEST_fff_f (fma, -0x1p-16494L, 0x1p-1L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16494L, 0x1.1p-1L, 0x0.ffffffffffffffffffffffffffffp-16382L, 0x1p-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, -0x1p-16494L, 0x1.1p-1L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x1p16383L, 0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p16383L, 0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p16383L, -0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p16383L, -0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x1p-16382L, 0x1p-16382L);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p-16382L, 0x1p-16382L, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p-16382L, -0x1p-16382L);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x0.ffffffffffffffffffffffffffffp-16382L, 0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x0.ffffffffffffffffffffffffffffp-16382L, 0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x1p-16494L, 0x1p-16494L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p-16494L, 0x1p-16494L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p-16494L, -0x1p-16494L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p-16494L, -0x1p-16494L, UNDERFLOW_EXCEPTION);
#endif
END (fma);
@@ -4766,6 +4830,22 @@ fma_test_towardzero (void)
TEST_fff_f (fma, -0x1p-149, 0x1p-1, -0x0.fffffep-126, -0x0.fffffep-126, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-149, 0x1.1p-1, 0x0.fffffep-126, 0x0.fffffep-126, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, -0x1p-149, 0x1.1p-1, -0x0.fffffep-126, -0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x1p127, 0x1p127);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p127, 0x0.ffffffp127);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p127, -0x0.ffffffp127);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p127, -0x1p127);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x1p-126, 0x1p-126);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p-126, 0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p-126, -0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p-126, -0x1p-126);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x0.fffffep-126, 0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x0.fffffep-126, 0x0.fffffcp-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x0.fffffep-126, -0x0.fffffcp-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x0.fffffep-126, -0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x1p-149, 0x1p-149, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p-149, plus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p-149, minus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p-149, -0x1p-149, UNDERFLOW_EXCEPTION);
#endif
#if defined (TEST_DOUBLE) && DBL_MANT_DIG == 53
TEST_fff_f (fma, 0x1.4p-1022, 0x1.0000000000002p-1, 0x1p-1024, 0x1.c000000000002p-1023, UNDERFLOW_EXCEPTION);
@@ -4776,6 +4856,22 @@ fma_test_towardzero (void)
TEST_fff_f (fma, -0x1p-1074, 0x1p-1, -0x0.fffffffffffffp-1022, -0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-1074, 0x1.1p-1, 0x0.fffffffffffffp-1022, 0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, -0x1p-1074, 0x1.1p-1, -0x0.fffffffffffffp-1022, -0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x1p1023, 0x1p1023);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p1023, 0x0.fffffffffffff8p1023);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p1023, -0x0.fffffffffffff8p1023);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p1023, -0x1p1023);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x1p-1022, 0x1p-1022);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p-1022, 0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p-1022, -0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p-1022, -0x1p-1022);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x0.fffffffffffffp-1022, 0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x0.fffffffffffffp-1022, 0x0.ffffffffffffep-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x0.fffffffffffffp-1022, -0x0.ffffffffffffep-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x0.fffffffffffffp-1022, -0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x1p-1074, 0x1p-1074, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p-1074, plus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p-1074, minus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p-1074, -0x1p-1074, UNDERFLOW_EXCEPTION);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 64
TEST_fff_f (fma, 0x1.4p-16382L, 0x1.0000000000000004p-1L, 0x1p-16384L, 0x1.c000000000000004p-16383L, UNDERFLOW_EXCEPTION);
@@ -4786,6 +4882,22 @@ fma_test_towardzero (void)
TEST_fff_f (fma, -0x1p-16445L, 0x1p-1L, -0x0.fffffffffffffffep-16382L, -0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16445L, 0x1.1p-1L, 0x0.fffffffffffffffep-16382L, 0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, -0x1p-16445L, 0x1.1p-1L, -0x0.fffffffffffffffep-16382L, -0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x1p16383L, 0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p16383L, 0x0.ffffffffffffffffp16383L);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p16383L, -0x0.ffffffffffffffffp16383L);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p16383L, -0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x1p-16382L, 0x1p-16382L);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p-16382L, 0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p-16382L, -0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p-16382L, -0x1p-16382L);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x0.fffffffffffffffep-16382L, 0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x0.fffffffffffffffep-16382L, 0x0.fffffffffffffffcp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x0.fffffffffffffffep-16382L, -0x0.fffffffffffffffcp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x0.fffffffffffffffep-16382L, -0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x1p-16445L, 0x1p-16445L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p-16445L, plus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p-16445L, minus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p-16445L, -0x1p-16445L, UNDERFLOW_EXCEPTION);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 113
TEST_fff_f (fma, 0x1.4p-16382L, 0x1.0000000000000000000000000002p-1L, 0x1p-16384L, 0x1.c000000000000000000000000002p-16383L, UNDERFLOW_EXCEPTION);
@@ -4796,6 +4908,22 @@ fma_test_towardzero (void)
TEST_fff_f (fma, -0x1p-16494L, 0x1p-1L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16494L, 0x1.1p-1L, 0x0.ffffffffffffffffffffffffffffp-16382L, 0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, -0x1p-16494L, 0x1.1p-1L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x1p16383L, 0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p16383L, 0x0.ffffffffffffffffffffffffffff8p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p16383L, -0x0.ffffffffffffffffffffffffffff8p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p16383L, -0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x1p-16382L, 0x1p-16382L);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p-16382L, 0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p-16382L, -0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p-16382L, -0x1p-16382L);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x0.ffffffffffffffffffffffffffffp-16382L, 0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x0.ffffffffffffffffffffffffffffp-16382L, 0x0.fffffffffffffffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x0.fffffffffffffffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x1p-16494L, 0x1p-16494L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p-16494L, plus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p-16494L, minus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p-16494L, -0x1p-16494L, UNDERFLOW_EXCEPTION);
#endif
}
@@ -4863,6 +4991,22 @@ fma_test_downward (void)
TEST_fff_f (fma, -0x1p-149, 0x1p-1, -0x0.fffffep-126, -0x1p-126, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-149, 0x1.1p-1, 0x0.fffffep-126, 0x0.fffffep-126, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, -0x1p-149, 0x1.1p-1, -0x0.fffffep-126, -0x1p-126, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x1p127, 0x1p127);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p127, 0x0.ffffffp127);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p127, -0x1p127);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p127, -0x1.000002p127);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x1p-126, 0x1p-126);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p-126, 0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p-126, -0x1p-126, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p-126, -0x1.000002p-126);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x0.fffffep-126, 0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x0.fffffep-126, 0x0.fffffcp-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x0.fffffep-126, -0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x0.fffffep-126, -0x1p-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x1p-149, 0x1p-149, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p-149, plus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p-149, -0x1p-149, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p-149, -0x1p-148, UNDERFLOW_EXCEPTION);
#endif
#if defined (TEST_DOUBLE) && DBL_MANT_DIG == 53
TEST_fff_f (fma, 0x1.4p-1022, 0x1.0000000000002p-1, 0x1p-1024, 0x1.c000000000002p-1023, UNDERFLOW_EXCEPTION);
@@ -4873,6 +5017,22 @@ fma_test_downward (void)
TEST_fff_f (fma, -0x1p-1074, 0x1p-1, -0x0.fffffffffffffp-1022, -0x1p-1022, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-1074, 0x1.1p-1, 0x0.fffffffffffffp-1022, 0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, -0x1p-1074, 0x1.1p-1, -0x0.fffffffffffffp-1022, -0x1p-1022, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x1p1023, 0x1p1023);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p1023, 0x0.fffffffffffff8p1023);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p1023, -0x1p1023);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p1023, -0x1.0000000000001p1023);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x1p-1022, 0x1p-1022);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p-1022, 0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p-1022, -0x1p-1022, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p-1022, -0x1.0000000000001p-1022);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x0.fffffffffffffp-1022, 0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x0.fffffffffffffp-1022, 0x0.ffffffffffffep-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x0.fffffffffffffp-1022, -0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x0.fffffffffffffp-1022, -0x1p-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x1p-1074, 0x1p-1074, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p-1074, plus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p-1074, -0x1p-1074, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p-1074, -0x1p-1073, UNDERFLOW_EXCEPTION);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 64
TEST_fff_f (fma, 0x1.4p-16382L, 0x1.0000000000000004p-1L, 0x1p-16384L, 0x1.c000000000000004p-16383L, UNDERFLOW_EXCEPTION);
@@ -4883,6 +5043,22 @@ fma_test_downward (void)
TEST_fff_f (fma, -0x1p-16445L, 0x1p-1L, -0x0.fffffffffffffffep-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16445L, 0x1.1p-1L, 0x0.fffffffffffffffep-16382L, 0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, -0x1p-16445L, 0x1.1p-1L, -0x0.fffffffffffffffep-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x1p16383L, 0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p16383L, 0x0.ffffffffffffffffp16383L);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p16383L, -0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p16383L, -0x1.0000000000000002p16383L);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x1p-16382L, 0x1p-16382L);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p-16382L, 0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p-16382L, -0x1.0000000000000002p-16382L);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x0.fffffffffffffffep-16382L, 0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x0.fffffffffffffffep-16382L, 0x0.fffffffffffffffcp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x0.fffffffffffffffep-16382L, -0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x0.fffffffffffffffep-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x1p-16445L, 0x1p-16445L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p-16445L, plus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p-16445L, -0x1p-16445L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p-16445L, -0x1p-16444L, UNDERFLOW_EXCEPTION);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 113
TEST_fff_f (fma, 0x1.4p-16382L, 0x1.0000000000000000000000000002p-1L, 0x1p-16384L, 0x1.c000000000000000000000000002p-16383L, UNDERFLOW_EXCEPTION);
@@ -4893,6 +5069,22 @@ fma_test_downward (void)
TEST_fff_f (fma, -0x1p-16494L, 0x1p-1L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16494L, 0x1.1p-1L, 0x0.ffffffffffffffffffffffffffffp-16382L, 0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, -0x1p-16494L, 0x1.1p-1L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x1p16383L, 0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p16383L, 0x0.ffffffffffffffffffffffffffff8p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p16383L, -0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p16383L, -0x1.0000000000000000000000000001p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x1p-16382L, 0x1p-16382L);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p-16382L, 0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p-16382L, -0x1.0000000000000000000000000001p-16382L);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x0.ffffffffffffffffffffffffffffp-16382L, 0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x0.ffffffffffffffffffffffffffffp-16382L, 0x0.fffffffffffffffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x1p-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x1p-16494L, 0x1p-16494L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p-16494L, plus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p-16494L, -0x1p-16494L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p-16494L, -0x1p-16493L, UNDERFLOW_EXCEPTION);
#endif
}
@@ -4960,6 +5152,22 @@ fma_test_upward (void)
TEST_fff_f (fma, -0x1p-149, 0x1p-1, -0x0.fffffep-126, -0x0.fffffep-126, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-149, 0x1.1p-1, 0x0.fffffep-126, 0x1p-126, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
TEST_fff_f (fma, -0x1p-149, 0x1.1p-1, -0x0.fffffep-126, -0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x1p127, 0x1.000002p127);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p127, 0x1p127);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p127, -0x0.ffffffp127);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p127, -0x1p127);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x1p-126, 0x1.000002p-126);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p-126, 0x1p-126, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p-126, -0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p-126, -0x1p-126);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x0.fffffep-126, 0x1p-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x0.fffffep-126, 0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x0.fffffep-126, -0x0.fffffcp-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x0.fffffep-126, -0x0.fffffep-126, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, 0x1p-149, 0x1p-148, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p-149, 0x1p-149, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p-149, minus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p-149, -0x1p-149, UNDERFLOW_EXCEPTION);
#endif
#if defined (TEST_DOUBLE) && DBL_MANT_DIG == 53
TEST_fff_f (fma, 0x1.4p-1022, 0x1.0000000000002p-1, 0x1p-1024, 0x1.c000000000004p-1023, UNDERFLOW_EXCEPTION);
@@ -4970,6 +5178,22 @@ fma_test_upward (void)
TEST_fff_f (fma, -0x1p-1074, 0x1p-1, -0x0.fffffffffffffp-1022, -0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-1074, 0x1.1p-1, 0x0.fffffffffffffp-1022, 0x1p-1022, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
TEST_fff_f (fma, -0x1p-1074, 0x1.1p-1, -0x0.fffffffffffffp-1022, -0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x1p1023, 0x1.0000000000001p1023);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p1023, 0x1p1023);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p1023, -0x0.fffffffffffff8p1023);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p1023, -0x1p1023);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x1p-1022, 0x1.0000000000001p-1022);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p-1022, 0x1p-1022, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p-1022, -0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p-1022, -0x1p-1022);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x0.fffffffffffffp-1022, 0x1p-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x0.fffffffffffffp-1022, 0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x0.fffffffffffffp-1022, -0x0.ffffffffffffep-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x0.fffffffffffffp-1022, -0x0.fffffffffffffp-1022, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, 0x1p-1074, 0x1p-1073, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p-1074, 0x1p-1074, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p-1074, minus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p-1074, -0x1p-1074, UNDERFLOW_EXCEPTION);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 64
TEST_fff_f (fma, 0x1.4p-16382L, 0x1.0000000000000004p-1L, 0x1p-16384L, 0x1.c000000000000008p-16383L, UNDERFLOW_EXCEPTION);
@@ -4980,6 +5204,22 @@ fma_test_upward (void)
TEST_fff_f (fma, -0x1p-16445L, 0x1p-1L, -0x0.fffffffffffffffep-16382L, -0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16445L, 0x1.1p-1L, 0x0.fffffffffffffffep-16382L, 0x1p-16382L, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
TEST_fff_f (fma, -0x1p-16445L, 0x1.1p-1L, -0x0.fffffffffffffffep-16382L, -0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x1p16383L, 0x1.0000000000000002p16383L);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p16383L, 0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p16383L, -0x0.ffffffffffffffffp16383L);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p16383L, -0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x1p-16382L, 0x1.0000000000000002p-16382L);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p-16382L, 0x1p-16382L, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p-16382L, -0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p-16382L, -0x1p-16382L);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x0.fffffffffffffffep-16382L, 0x1p-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x0.fffffffffffffffep-16382L, 0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x0.fffffffffffffffep-16382L, -0x0.fffffffffffffffcp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x0.fffffffffffffffep-16382L, -0x0.fffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, 0x1p-16445L, 0x1p-16444L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p-16445L, 0x1p-16445L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p-16445L, minus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p-16445L, -0x1p-16445L, UNDERFLOW_EXCEPTION);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 113
TEST_fff_f (fma, 0x1.4p-16382L, 0x1.0000000000000000000000000002p-1L, 0x1p-16384L, 0x1.c000000000000000000000000004p-16383L, UNDERFLOW_EXCEPTION);
@@ -4990,6 +5230,22 @@ fma_test_upward (void)
TEST_fff_f (fma, -0x1p-16494L, 0x1p-1L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16494L, 0x1.1p-1L, 0x0.ffffffffffffffffffffffffffffp-16382L, 0x1p-16382L, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
TEST_fff_f (fma, -0x1p-16494L, 0x1.1p-1L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x1p16383L, 0x1.0000000000000000000000000001p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p16383L, 0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p16383L, -0x0.ffffffffffffffffffffffffffff8p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p16383L, -0x1p16383L);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x1p-16382L, 0x1.0000000000000000000000000001p-16382L);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p-16382L, 0x1p-16382L, UNDERFLOW_EXCEPTION_BEFORE_ROUNDING);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p-16382L, -0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p-16382L, -0x1p-16382L);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x0.ffffffffffffffffffffffffffffp-16382L, 0x1p-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x0.ffffffffffffffffffffffffffffp-16382L, 0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x0.fffffffffffffffffffffffffffep-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x0.ffffffffffffffffffffffffffffp-16382L, -0x0.ffffffffffffffffffffffffffffp-16382L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, 0x1p-16494L, 0x1p-16493L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p-16494L, 0x1p-16494L, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p-16494L, minus_zero, UNDERFLOW_EXCEPTION);
+ TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p-16494L, -0x1p-16494L, UNDERFLOW_EXCEPTION);
#endif
}
diff --git a/sysdeps/ieee754/dbl-64/s_fma.c b/sysdeps/ieee754/dbl-64/s_fma.c
index 155a773..68c63a1 100644
--- a/sysdeps/ieee754/dbl-64/s_fma.c
+++ b/sysdeps/ieee754/dbl-64/s_fma.c
@@ -56,16 +56,44 @@ __fma (double x, double y, double z)
if (z == 0 && x != 0 && y != 0)
return x * y;
/* If x or y or z is Inf/NaN, or if fma will certainly overflow,
- or if x * y is less than half of DBL_DENORM_MIN,
- compute as x * y + z. */
+ or if x * y is zero, compute as x * y + z. */
if (u.ieee.exponent == 0x7ff
|| v.ieee.exponent == 0x7ff
|| w.ieee.exponent == 0x7ff
|| u.ieee.exponent + v.ieee.exponent
> 0x7ff + IEEE754_DOUBLE_BIAS
- || u.ieee.exponent + v.ieee.exponent
- < IEEE754_DOUBLE_BIAS - DBL_MANT_DIG - 2)
+ || x == 0
+ || y == 0)
return x * y + z;
+ /* If x * y is less than 1/4 of DBL_DENORM_MIN, neither the
+ result nor whether there is underflow depends on its exact
+ value, only on its sign. */
+ if (u.ieee.exponent + v.ieee.exponent
+ < IEEE754_DOUBLE_BIAS - DBL_MANT_DIG - 2)
+ {
+ int neg = u.ieee.negative ^ v.ieee.negative;
+ double tiny = neg ? -0x1p-1074 : 0x1p-1074;
+ if (w.ieee.exponent >= 3)
+ return tiny + z;
+ /* Scaling up, adding TINY and scaling down produces the
+ correct result, because in round-to-nearest mode adding
+ TINY has no effect and in other modes double rounding is
+ harmless. But it may not produce required underflow
+ exceptions. */
+ v.d = z * 0x1p54 + tiny;
+ if (TININESS_AFTER_ROUNDING
+ ? v.ieee.exponent < 55
+ : (w.ieee.exponent == 0
+ || (w.ieee.exponent == 1
+ && w.ieee.negative != neg
+ && w.ieee.mantissa1 == 0
+ && w.ieee.mantissa0 == 0)))
+ {
+ volatile double force_underflow = x * y;
+ (void) force_underflow;
+ }
+ return v.d * 0x1p-54;
+ }
if (u.ieee.exponent + v.ieee.exponent
>= 0x7ff + IEEE754_DOUBLE_BIAS - DBL_MANT_DIG)
{
diff --git a/sysdeps/ieee754/ldbl-128/s_fmal.c b/sysdeps/ieee754/ldbl-128/s_fmal.c
index 201bff9..c6a3d71 100644
--- a/sysdeps/ieee754/ldbl-128/s_fmal.c
+++ b/sysdeps/ieee754/ldbl-128/s_fmal.c
@@ -57,16 +57,46 @@ __fmal (long double x, long double y, long double z)
if (z == 0 && x != 0 && y != 0)
return x * y;
/* If x or y or z is Inf/NaN, or if fma will certainly overflow,
- or if x * y is less than half of LDBL_DENORM_MIN,
- compute as x * y + z. */
+ or if x * y is zero, compute as x * y + z. */
if (u.ieee.exponent == 0x7fff
|| v.ieee.exponent == 0x7fff
|| w.ieee.exponent == 0x7fff
|| u.ieee.exponent + v.ieee.exponent
> 0x7fff + IEEE854_LONG_DOUBLE_BIAS
- || u.ieee.exponent + v.ieee.exponent
- < IEEE854_LONG_DOUBLE_BIAS - LDBL_MANT_DIG - 2)
+ || x == 0
+ || y == 0)
return x * y + z;
+ /* If x * y is less than 1/4 of LDBL_DENORM_MIN, neither the
+ result nor whether there is underflow depends on its exact
+ value, only on its sign. */
+ if (u.ieee.exponent + v.ieee.exponent
+ < IEEE854_LONG_DOUBLE_BIAS - LDBL_MANT_DIG - 2)
+ {
+ int neg = u.ieee.negative ^ v.ieee.negative;
+ long double tiny = neg ? -0x1p-16494L : 0x1p-16494L;
+ if (w.ieee.exponent >= 3)
+ return tiny + z;
+ /* Scaling up, adding TINY and scaling down produces the
+ correct result, because in round-to-nearest mode adding
+ TINY has no effect and in other modes double rounding is
+ harmless. But it may not produce required underflow
+ exceptions. */
+ v.d = z * 0x1p114L + tiny;
+ if (TININESS_AFTER_ROUNDING
+ ? v.ieee.exponent < 115
+ : (w.ieee.exponent == 0
+ || (w.ieee.exponent == 1
+ && w.ieee.negative != neg
+ && w.ieee.mantissa3 == 0
+ && w.ieee.mantissa2 == 0
+ && w.ieee.mantissa1 == 0
+ && w.ieee.mantissa0 == 0)))
+ {
+ volatile long double force_underflow = x * y;
+ (void) force_underflow;
+ }
+ return v.d * 0x1p-114L;
+ }
if (u.ieee.exponent + v.ieee.exponent
>= 0x7fff + IEEE854_LONG_DOUBLE_BIAS - LDBL_MANT_DIG)
{
diff --git a/sysdeps/ieee754/ldbl-96/s_fmal.c b/sysdeps/ieee754/ldbl-96/s_fmal.c
index 91333af..b5fdcba 100644
--- a/sysdeps/ieee754/ldbl-96/s_fmal.c
+++ b/sysdeps/ieee754/ldbl-96/s_fmal.c
@@ -57,16 +57,44 @@ __fmal (long double x, long double y, long double z)
if (z == 0 && x != 0 && y != 0)
return x * y;
/* If x or y or z is Inf/NaN, or if fma will certainly overflow,
- or if x * y is less than half of LDBL_DENORM_MIN,
- compute as x * y + z. */
+ or if x * y is zero, compute as x * y + z. */
if (u.ieee.exponent == 0x7fff
|| v.ieee.exponent == 0x7fff
|| w.ieee.exponent == 0x7fff
|| u.ieee.exponent + v.ieee.exponent
> 0x7fff + IEEE854_LONG_DOUBLE_BIAS
- || u.ieee.exponent + v.ieee.exponent
- < IEEE854_LONG_DOUBLE_BIAS - LDBL_MANT_DIG - 2)
+ || x == 0
+ || y == 0)
return x * y + z;
+ /* If x * y is less than 1/4 of LDBL_DENORM_MIN, neither the
+ result nor whether there is underflow depends on its exact
+ value, only on its sign. */
+ if (u.ieee.exponent + v.ieee.exponent
+ < IEEE854_LONG_DOUBLE_BIAS - LDBL_MANT_DIG - 2)
+ {
+ int neg = u.ieee.negative ^ v.ieee.negative;
+ long double tiny = neg ? -0x1p-16445L : 0x1p-16445L;
+ if (w.ieee.exponent >= 3)
+ return tiny + z;
+ /* Scaling up, adding TINY and scaling down produces the
+ correct result, because in round-to-nearest mode adding
+ TINY has no effect and in other modes double rounding is
+ harmless. But it may not produce required underflow
+ exceptions. */
+ v.d = z * 0x1p65L + tiny;
+ if (TININESS_AFTER_ROUNDING
+ ? v.ieee.exponent < 66
+ : (w.ieee.exponent == 0
+ || (w.ieee.exponent == 1
+ && w.ieee.negative != neg
+ && w.ieee.mantissa1 == 0
+ && w.ieee.mantissa0 == 0x80000000)))
+ {
+ volatile long double force_underflow = x * y;
+ (void) force_underflow;
+ }
+ return v.d * 0x1p-65L;
+ }
if (u.ieee.exponent + v.ieee.exponent
>= 0x7fff + IEEE854_LONG_DOUBLE_BIAS - LDBL_MANT_DIG)
{
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 13 ++
NEWS | 2 +-
math/libm-test.inc | 256 +++++++++++++++++++++++++++++++++++++
sysdeps/ieee754/dbl-64/s_fma.c | 36 +++++-
sysdeps/ieee754/ldbl-128/s_fmal.c | 38 +++++-
sysdeps/ieee754/ldbl-96/s_fmal.c | 36 +++++-
6 files changed, 368 insertions(+), 13 deletions(-)
hooks/post-receive
--
GNU C Library master sources