Fix erfc errno setting on underflow (bug 6786).

2 files changed, 309 insertions, 6 deletions

diff --git a/math/auto-libm-test-in b/math/auto-libm-test-in
index 392cc57bf3..126a9eaec7 100644
--- a/math/auto-libm-test-in
+++ b/math/auto-libm-test-in
@@ -149,9 +149,18 @@ erfc 4.125
 erfc 0x1.ffa002p+2
 erfc 0x1.ffffc8p+2
 erfc -0x1.fffffffffffff8p-2
-# Bug 6786: errno may not be set on underflow.
-erfc 27.0 missing-errno
+erfc 26.0
+erfc 27.0
+erfc 28.0
 erfc 0x1.ffff56789abcdef0123456789a8p+2
+erfc 100
+erfc 106
+erfc 106.5
+erfc 106.625
+erfc 107
+erfc 108
+erfc 1000
+erfc max
 
 exp 0
 exp -0
diff --git a/math/auto-libm-test-out b/math/auto-libm-test-out
index 8769a9df7c..9b3c398893 100644
--- a/math/auto-libm-test-out
+++ b/math/auto-libm-test-out
@@ -5176,10 +5176,35 @@ erfc -0x1.fffffffffffff8p-2
 = erfc tonearest ldbl-128ibm -0x7.ffffffffffffep-4L : 0x1.853f7ae0c76e8f9c90d4d08ca18p+0L : inexact-ok
 = erfc towardzero ldbl-128ibm -0x7.ffffffffffffep-4L : 0x1.853f7ae0c76e8f9c90d4d08ca1p+0L : inexact-ok
 = erfc upward ldbl-128ibm -0x7.ffffffffffffep-4L : 0x1.853f7ae0c76e8f9c90d4d08ca18p+0L : inexact-ok
-erfc 27.0 missing-errno
-= erfc downward flt-32 0x1.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange errno-erange-ok
-= erfc tonearest flt-32 0x1.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange errno-erange-ok
-= erfc towardzero flt-32 0x1.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange errno-erange-ok
+erfc 26.0
+= erfc downward flt-32 0x1.ap+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc tonearest flt-32 0x1.ap+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc towardzero flt-32 0x1.ap+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc upward flt-32 0x1.ap+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= erfc downward dbl-64 0x1.ap+4 : 0x9.425ff0e6f5118p-984 : inexact-ok
+= erfc tonearest dbl-64 0x1.ap+4 : 0x9.425ff0e6f512p-984 : inexact-ok
+= erfc towardzero dbl-64 0x1.ap+4 : 0x9.425ff0e6f5118p-984 : inexact-ok
+= erfc upward dbl-64 0x1.ap+4 : 0x9.425ff0e6f512p-984 : inexact-ok
+= erfc downward ldbl-96-intel 0x1.ap+4L : 0x9.425ff0e6f511d74p-984L : inexact-ok
+= erfc tonearest ldbl-96-intel 0x1.ap+4L : 0x9.425ff0e6f511d75p-984L : inexact-ok
+= erfc towardzero ldbl-96-intel 0x1.ap+4L : 0x9.425ff0e6f511d74p-984L : inexact-ok
+= erfc upward ldbl-96-intel 0x1.ap+4L : 0x9.425ff0e6f511d75p-984L : inexact-ok
+= erfc downward ldbl-96-m68k 0x1.ap+4L : 0x9.425ff0e6f511d74p-984L : inexact-ok
+= erfc tonearest ldbl-96-m68k 0x1.ap+4L : 0x9.425ff0e6f511d75p-984L : inexact-ok
+= erfc towardzero ldbl-96-m68k 0x1.ap+4L : 0x9.425ff0e6f511d74p-984L : inexact-ok
+= erfc upward ldbl-96-m68k 0x1.ap+4L : 0x9.425ff0e6f511d75p-984L : inexact-ok
+= erfc downward ldbl-128 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfbbceffp-984L : inexact-ok
+= erfc tonearest ldbl-128 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfbbceffp-984L : inexact-ok
+= erfc towardzero ldbl-128 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfbbceffp-984L : inexact-ok
+= erfc upward ldbl-128 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfbbceff8p-984L : inexact-ok
+= erfc downward ldbl-128ibm 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfb8p-984L : inexact-ok underflow errno-erange-ok
+= erfc tonearest ldbl-128ibm 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfbcp-984L : inexact-ok underflow errno-erange-ok
+= erfc towardzero ldbl-128ibm 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfb8p-984L : inexact-ok underflow errno-erange-ok
+= erfc upward ldbl-128ibm 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfbcp-984L : inexact-ok underflow errno-erange-ok
+erfc 27.0
+= erfc downward flt-32 0x1.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc tonearest flt-32 0x1.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc towardzero flt-32 0x1.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange
 = erfc upward flt-32 0x1.bp+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
 = erfc downward dbl-64 0x1.bp+4 : 0x6.783cp-1060 : inexact-ok underflow errno-erange-ok
 = erfc tonearest dbl-64 0x1.bp+4 : 0x6.783cp-1060 : inexact-ok underflow errno-erange-ok
@@ -5201,6 +5226,31 @@ erfc 27.0 missing-errno
 = erfc tonearest ldbl-128ibm 0x1.bp+4L : 0x6.783cp-1060L : inexact-ok underflow errno-erange-ok
 = erfc towardzero ldbl-128ibm 0x1.bp+4L : 0x6.783cp-1060L : inexact-ok underflow errno-erange-ok
 = erfc upward ldbl-128ibm 0x1.bp+4L : 0x6.784p-1060L : inexact-ok underflow errno-erange-ok
+erfc 28.0
+= erfc downward flt-32 0x1.cp+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc tonearest flt-32 0x1.cp+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc towardzero flt-32 0x1.cp+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc upward flt-32 0x1.cp+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= erfc downward dbl-64 0x1.cp+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc tonearest dbl-64 0x1.cp+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc towardzero dbl-64 0x1.cp+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc upward dbl-64 0x1.cp+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-intel 0x1.cp+4L : 0x9.cd4b80875a8ec66p-1140L : inexact-ok
+= erfc tonearest ldbl-96-intel 0x1.cp+4L : 0x9.cd4b80875a8ec66p-1140L : inexact-ok
+= erfc towardzero ldbl-96-intel 0x1.cp+4L : 0x9.cd4b80875a8ec66p-1140L : inexact-ok
+= erfc upward ldbl-96-intel 0x1.cp+4L : 0x9.cd4b80875a8ec67p-1140L : inexact-ok
+= erfc downward ldbl-96-m68k 0x1.cp+4L : 0x9.cd4b80875a8ec66p-1140L : inexact-ok
+= erfc tonearest ldbl-96-m68k 0x1.cp+4L : 0x9.cd4b80875a8ec66p-1140L : inexact-ok
+= erfc towardzero ldbl-96-m68k 0x1.cp+4L : 0x9.cd4b80875a8ec66p-1140L : inexact-ok
+= erfc upward ldbl-96-m68k 0x1.cp+4L : 0x9.cd4b80875a8ec67p-1140L : inexact-ok
+= erfc downward ldbl-128 0x1.cp+4L : 0x9.cd4b80875a8ec6603b9a1f1beadp-1140L : inexact-ok
+= erfc tonearest ldbl-128 0x1.cp+4L : 0x9.cd4b80875a8ec6603b9a1f1bead8p-1140L : inexact-ok
+= erfc towardzero ldbl-128 0x1.cp+4L : 0x9.cd4b80875a8ec6603b9a1f1beadp-1140L : inexact-ok
+= erfc upward ldbl-128 0x1.cp+4L : 0x9.cd4b80875a8ec6603b9a1f1bead8p-1140L : inexact-ok
+= erfc downward ldbl-128ibm 0x1.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128ibm 0x1.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128ibm 0x1.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128ibm 0x1.cp+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
 erfc 0x1.ffff56789abcdef0123456789a8p+2
 = erfc downward flt-32 0x7.fffd6p+0f : 0xe.3cd88p-100f : inexact-ok
 = erfc tonearest flt-32 0x7.fffd6p+0f : 0xe.3cd88p-100f : inexact-ok
@@ -5330,6 +5380,250 @@ erfc 0x1.ffff56789abcdef0123456789a8p+2
 = erfc tonearest ldbl-128ibm 0x7.fffd59e26af37bc048d159e26ap+0L : 0xe.3cddffbbe84faf818649c2377p-100L : inexact-ok
 = erfc towardzero ldbl-128ibm 0x7.fffd59e26af37bc048d159e26ap+0L : 0xe.3cddffbbe84faf818649c2377p-100L : inexact-ok
 = erfc upward ldbl-128ibm 0x7.fffd59e26af37bc048d159e26ap+0L : 0xe.3cddffbbe84faf818649c23774p-100L : inexact-ok
+erfc 100
+= erfc downward flt-32 0x6.4p+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc tonearest flt-32 0x6.4p+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc towardzero flt-32 0x6.4p+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc upward flt-32 0x6.4p+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= erfc downward dbl-64 0x6.4p+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc tonearest dbl-64 0x6.4p+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc towardzero dbl-64 0x6.4p+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc upward dbl-64 0x6.4p+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-intel 0x6.4p+4L : 0x2.fd514cef7750e588p-14436L : inexact-ok
+= erfc tonearest ldbl-96-intel 0x6.4p+4L : 0x2.fd514cef7750e588p-14436L : inexact-ok
+= erfc towardzero ldbl-96-intel 0x6.4p+4L : 0x2.fd514cef7750e588p-14436L : inexact-ok
+= erfc upward ldbl-96-intel 0x6.4p+4L : 0x2.fd514cef7750e58cp-14436L : inexact-ok
+= erfc downward ldbl-96-m68k 0x6.4p+4L : 0x2.fd514cef7750e588p-14436L : inexact-ok
+= erfc tonearest ldbl-96-m68k 0x6.4p+4L : 0x2.fd514cef7750e588p-14436L : inexact-ok
+= erfc towardzero ldbl-96-m68k 0x6.4p+4L : 0x2.fd514cef7750e588p-14436L : inexact-ok
+= erfc upward ldbl-96-m68k 0x6.4p+4L : 0x2.fd514cef7750e58cp-14436L : inexact-ok
+= erfc downward ldbl-128 0x6.4p+4L : 0x2.fd514cef7750e58906601ff35dcp-14436L : inexact-ok
+= erfc tonearest ldbl-128 0x6.4p+4L : 0x2.fd514cef7750e58906601ff35dcp-14436L : inexact-ok
+= erfc towardzero ldbl-128 0x6.4p+4L : 0x2.fd514cef7750e58906601ff35dcp-14436L : inexact-ok
+= erfc upward ldbl-128 0x6.4p+4L : 0x2.fd514cef7750e58906601ff35dc2p-14436L : inexact-ok
+= erfc downward ldbl-128ibm 0x6.4p+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128ibm 0x6.4p+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128ibm 0x6.4p+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128ibm 0x6.4p+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+erfc 106
+= erfc downward flt-32 0x6.ap+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc tonearest flt-32 0x6.ap+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc towardzero flt-32 0x6.ap+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc upward flt-32 0x6.ap+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= erfc downward dbl-64 0x6.ap+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc tonearest dbl-64 0x6.ap+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc towardzero dbl-64 0x6.ap+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc upward dbl-64 0x6.ap+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-intel 0x6.ap+4L : 0x5.028a2f1656a432dp-16220L : inexact-ok
+= erfc tonearest ldbl-96-intel 0x6.ap+4L : 0x5.028a2f1656a432d8p-16220L : inexact-ok
+= erfc towardzero ldbl-96-intel 0x6.ap+4L : 0x5.028a2f1656a432dp-16220L : inexact-ok
+= erfc upward ldbl-96-intel 0x6.ap+4L : 0x5.028a2f1656a432d8p-16220L : inexact-ok
+= erfc downward ldbl-96-m68k 0x6.ap+4L : 0x5.028a2f1656a432dp-16220L : inexact-ok
+= erfc tonearest ldbl-96-m68k 0x6.ap+4L : 0x5.028a2f1656a432d8p-16220L : inexact-ok
+= erfc towardzero ldbl-96-m68k 0x6.ap+4L : 0x5.028a2f1656a432dp-16220L : inexact-ok
+= erfc upward ldbl-96-m68k 0x6.ap+4L : 0x5.028a2f1656a432d8p-16220L : inexact-ok
+= erfc downward ldbl-128 0x6.ap+4L : 0x5.028a2f1656a432d79f76a6f2df48p-16220L : inexact-ok
+= erfc tonearest ldbl-128 0x6.ap+4L : 0x5.028a2f1656a432d79f76a6f2df48p-16220L : inexact-ok
+= erfc towardzero ldbl-128 0x6.ap+4L : 0x5.028a2f1656a432d79f76a6f2df48p-16220L : inexact-ok
+= erfc upward ldbl-128 0x6.ap+4L : 0x5.028a2f1656a432d79f76a6f2df4cp-16220L : inexact-ok
+= erfc downward ldbl-128ibm 0x6.ap+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128ibm 0x6.ap+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128ibm 0x6.ap+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128ibm 0x6.ap+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+erfc 106.5
+= erfc downward flt-32 0x6.a8p+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc tonearest flt-32 0x6.a8p+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc towardzero flt-32 0x6.a8p+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc upward flt-32 0x6.a8p+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= erfc downward dbl-64 0x6.a8p+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc tonearest dbl-64 0x6.a8p+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc towardzero dbl-64 0x6.a8p+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc upward dbl-64 0x6.a8p+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-intel 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a4p-16372L : inexact-ok
+= erfc tonearest ldbl-96-intel 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a4p-16372L : inexact-ok
+= erfc towardzero ldbl-96-intel 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a4p-16372L : inexact-ok
+= erfc upward ldbl-96-intel 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a8p-16372L : inexact-ok
+= erfc downward ldbl-96-m68k 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a4p-16372L : inexact-ok
+= erfc tonearest ldbl-96-m68k 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a4p-16372L : inexact-ok
+= erfc towardzero ldbl-96-m68k 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a4p-16372L : inexact-ok
+= erfc upward ldbl-96-m68k 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a8p-16372L : inexact-ok
+= erfc downward ldbl-128 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a5e595291fc8c4p-16372L : inexact-ok
+= erfc tonearest ldbl-128 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a5e595291fc8c4p-16372L : inexact-ok
+= erfc towardzero ldbl-128 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a5e595291fc8c4p-16372L : inexact-ok
+= erfc upward ldbl-128 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a5e595291fc8c6p-16372L : inexact-ok
+= erfc downward ldbl-128ibm 0x6.a8p+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128ibm 0x6.a8p+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128ibm 0x6.a8p+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128ibm 0x6.a8p+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+erfc 106.625
+= erfc downward flt-32 0x6.aap+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc tonearest flt-32 0x6.aap+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc towardzero flt-32 0x6.aap+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc upward flt-32 0x6.aap+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= erfc downward dbl-64 0x6.aap+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc tonearest dbl-64 0x6.aap+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc towardzero dbl-64 0x6.aap+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc upward dbl-64 0x6.aap+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-intel 0x6.aap+4L : 0x6.0b6ee9978p-16412L : inexact-ok underflow errno-erange-ok
+= erfc tonearest ldbl-96-intel 0x6.aap+4L : 0x6.0b6ee998p-16412L : inexact-ok underflow errno-erange-ok
+= erfc towardzero ldbl-96-intel 0x6.aap+4L : 0x6.0b6ee9978p-16412L : inexact-ok underflow errno-erange-ok
+= erfc upward ldbl-96-intel 0x6.aap+4L : 0x6.0b6ee998p-16412L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-m68k 0x6.aap+4L : 0x6.0b6ee997cp-16412L : inexact-ok underflow errno-erange-ok
+= erfc tonearest ldbl-96-m68k 0x6.aap+4L : 0x6.0b6ee997cp-16412L : inexact-ok underflow errno-erange-ok
+= erfc towardzero ldbl-96-m68k 0x6.aap+4L : 0x6.0b6ee997cp-16412L : inexact-ok underflow errno-erange-ok
+= erfc upward ldbl-96-m68k 0x6.aap+4L : 0x6.0b6ee998p-16412L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128 0x6.aap+4L : 0x6.0b6ee997d3343b5bf2f08p-16412L : inexact-ok underflow errno-erange-ok
+= erfc tonearest ldbl-128 0x6.aap+4L : 0x6.0b6ee997d3343b5bf2f08p-16412L : inexact-ok underflow errno-erange-ok
+= erfc towardzero ldbl-128 0x6.aap+4L : 0x6.0b6ee997d3343b5bf2f08p-16412L : inexact-ok underflow errno-erange-ok
+= erfc upward ldbl-128 0x6.aap+4L : 0x6.0b6ee997d3343b5bf2f0cp-16412L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128ibm 0x6.aap+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128ibm 0x6.aap+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128ibm 0x6.aap+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128ibm 0x6.aap+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+erfc 107
+= erfc downward flt-32 0x6.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc tonearest flt-32 0x6.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc towardzero flt-32 0x6.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc upward flt-32 0x6.bp+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= erfc downward dbl-64 0x6.bp+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc tonearest dbl-64 0x6.bp+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc towardzero dbl-64 0x6.bp+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc upward dbl-64 0x6.bp+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-intel 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-96-intel 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-96-intel 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-96-intel 0x6.bp+4L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-m68k 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-96-m68k 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-96-m68k 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-96-m68k 0x6.bp+4L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128 0x6.bp+4L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128ibm 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128ibm 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128ibm 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128ibm 0x6.bp+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+erfc 108
+= erfc downward flt-32 0x6.cp+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc tonearest flt-32 0x6.cp+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc towardzero flt-32 0x6.cp+4f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc upward flt-32 0x6.cp+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= erfc downward dbl-64 0x6.cp+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc tonearest dbl-64 0x6.cp+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc towardzero dbl-64 0x6.cp+4 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc upward dbl-64 0x6.cp+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-intel 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-96-intel 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-96-intel 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-96-intel 0x6.cp+4L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-m68k 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-96-m68k 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-96-m68k 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-96-m68k 0x6.cp+4L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128 0x6.cp+4L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128ibm 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128ibm 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128ibm 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128ibm 0x6.cp+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+erfc 1000
+= erfc downward flt-32 0x3.e8p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc tonearest flt-32 0x3.e8p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc towardzero flt-32 0x3.e8p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc upward flt-32 0x3.e8p+8f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= erfc downward dbl-64 0x3.e8p+8 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc tonearest dbl-64 0x3.e8p+8 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc towardzero dbl-64 0x3.e8p+8 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc upward dbl-64 0x3.e8p+8 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-intel 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-96-intel 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-96-intel 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-96-intel 0x3.e8p+8L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-m68k 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-96-m68k 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-96-m68k 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-96-m68k 0x3.e8p+8L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128 0x3.e8p+8L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128ibm 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128ibm 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128ibm 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128ibm 0x3.e8p+8L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+erfc max
+= erfc downward flt-32 0xf.fffffp+124f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc tonearest flt-32 0xf.fffffp+124f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc towardzero flt-32 0xf.fffffp+124f : 0x0p+0f : inexact-ok underflow errno-erange
+= erfc upward flt-32 0xf.fffffp+124f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= erfc downward dbl-64 0xf.fffffp+124 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc tonearest dbl-64 0xf.fffffp+124 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc towardzero dbl-64 0xf.fffffp+124 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc upward dbl-64 0xf.fffffp+124 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-intel 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-96-intel 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-96-intel 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-96-intel 0xf.fffffp+124L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-m68k 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-96-m68k 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-96-m68k 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-96-m68k 0xf.fffffp+124L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128 0xf.fffffp+124L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128ibm 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128ibm 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128ibm 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128ibm 0xf.fffffp+124L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+= erfc downward dbl-64 0xf.ffffffffffff8p+1020 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc tonearest dbl-64 0xf.ffffffffffff8p+1020 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc towardzero dbl-64 0xf.ffffffffffff8p+1020 : 0x0p+0 : inexact-ok underflow errno-erange
+= erfc upward dbl-64 0xf.ffffffffffff8p+1020 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-intel 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-96-intel 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-96-intel 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-96-intel 0xf.ffffffffffff8p+1020L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-m68k 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-96-m68k 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-96-m68k 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-96-m68k 0xf.ffffffffffff8p+1020L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128 0xf.ffffffffffff8p+1020L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128ibm 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128ibm 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128ibm 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128ibm 0xf.ffffffffffff8p+1020L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-intel 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-96-intel 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-96-intel 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-96-intel 0xf.fffffffffffffffp+16380L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-96-m68k 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-96-m68k 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-96-m68k 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-96-m68k 0xf.fffffffffffffffp+16380L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128 0xf.fffffffffffffffp+16380L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128 0xf.fffffffffffffffffffffffffff8p+16380L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128 0xf.fffffffffffffffffffffffffff8p+16380L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128 0xf.fffffffffffffffffffffffffff8p+16380L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128 0xf.fffffffffffffffffffffffffff8p+16380L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128 0xf.ffffffffffffbffffffffffffcp+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128 0xf.ffffffffffffbffffffffffffcp+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128 0xf.ffffffffffffbffffffffffffcp+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128 0xf.ffffffffffffbffffffffffffcp+1020L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
+= erfc downward ldbl-128ibm 0xf.ffffffffffffbffffffffffffcp+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc tonearest ldbl-128ibm 0xf.ffffffffffffbffffffffffffcp+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc towardzero ldbl-128ibm 0xf.ffffffffffffbffffffffffffcp+1020L : 0x0p+0L : inexact-ok underflow errno-erange
+= erfc upward ldbl-128ibm 0xf.ffffffffffffbffffffffffffcp+1020L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
 exp 0
 = exp downward flt-32 0x0p+0f : 0x1p+0f : inexact-ok
 = exp tonearest flt-32 0x0p+0f : 0x1p+0f : inexact-ok