Fix expm1 missing underflows (bug 16353).

Similar to various other bugs in this area, some expm1 implementations do not raise the underflow exception for subnormal arguments, when the result is tiny and inexact. This patch forces the exception in a similar way to previous fixes. (The issue does not apply to the ldbl-* implementations or to those for x86 / x86_64 long double. The change to sysdeps/ieee754/dbl-64/wordsize-64/e_cosh.c is one I missed when previously fixing bug 16354; the bug in that implementation was previously latent, but the expm1 fixes stopped it being latent and so required it to be fixed to avoid spurious underflows from cosh.) Tested for x86_64 and x86. [BZ #16353] * sysdeps/i386/fpu/s_expm1.S (dbl_min): New object. (__expm1): Force underflow exception for arguments with small absolute value. * sysdeps/i386/fpu/s_expm1f.S (flt_min): New object. (__expm1f): Force underflow exception for arguments with small absolute value. * sysdeps/ieee754/dbl-64/s_expm1.c: Include <float.h>. (__expm1): Force underflow exception for arguments with small absolute value. * sysdeps/ieee754/flt-32/s_expm1f.c: Include <float.h>. (__expm1f): Force underflow exception for arguments with small absolute value. * sysdeps/ieee754/dbl-64/wordsize-64/e_cosh.c (__ieee754_cosh): Check for small arguments before calling __expm1. * math/auto-libm-test-in: Do not mark underflow exceptions as possibly missing for bug 16353. * math/auto-libm-test-out: Regenerated.
2015-06-22 21:06:19 +00:00 · 2015-06-22 21:06:19 +00:00 · 554edb23ff
parent 6b142b3a1d
commit 554edb23ff
9 changed files with 211 additions and 134 deletions
--- a/21
+++ b/21
@ -1,3 +1,24 @@
+2015-06-22  Joseph Myers  <joseph@codesourcery.com>
+
+	[BZ #16353]
+	* sysdeps/i386/fpu/s_expm1.S (dbl_min): New object.
+	(__expm1): Force underflow exception for arguments with small
+	absolute value.
+	* sysdeps/i386/fpu/s_expm1f.S (flt_min): New object.
+	(__expm1f): Force underflow exception for arguments with small
+	absolute value.
+	* sysdeps/ieee754/dbl-64/s_expm1.c: Include <float.h>.
+	(__expm1): Force underflow exception for arguments with small
+	absolute value.
+	* sysdeps/ieee754/flt-32/s_expm1f.c: Include <float.h>.
+	(__expm1f): Force underflow exception for arguments with small
+	absolute value.
+	* sysdeps/ieee754/dbl-64/wordsize-64/e_cosh.c (__ieee754_cosh):
+	Check for small arguments before calling __expm1.
+	* math/auto-libm-test-in: Do not mark underflow exceptions as
+	possibly missing for bug 16353.
+	* math/auto-libm-test-out: Regenerated.
+
 2015-06-22  Andreas Schwab  <schwab@suse.de>

 	[BZ #18513]
--- a/28
+++ b/28
@ -10,20 +10,20 @@ Version 2.22
 * The following bugs are resolved with this release:

  438, 4719, 6792, 13028, 13064, 14094, 14841, 14906, 14958, 15319, 15467,
-  15790, 15969, 16159, 16339, 16350, 16351, 16352, 16361, 16512, 16560,
-  16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293, 17322, 17523,
-  17542, 17569, 17581, 17588, 17596, 17620, 17621, 17628, 17631, 17692,
-  17711, 17715, 17776, 17779, 17792, 17836, 17912, 17916, 17930, 17932,
-  17944, 17949, 17964, 17965, 17967, 17969, 17978, 17987, 17991, 17996,
-  17998, 17999, 18007, 18019, 18020, 18029, 18030, 18032, 18034, 18036,
-  18038, 18039, 18042, 18043, 18046, 18047, 18049, 18068, 18080, 18093,
-  18100, 18104, 18110, 18111, 18116, 18125, 18128, 18138, 18185, 18196,
-  18197, 18206, 18210, 18211, 18217, 18220, 18221, 18234, 18244, 18247,
-  18287, 18319, 18324, 18333, 18346, 18397, 18409, 18410, 18412, 18418,
-  18422, 18434, 18444, 18468, 18469, 18470, 18479, 18483, 18495, 18496,
-  18497, 18498, 18507, 18512, 18513, 18519, 18520, 18522, 18527, 18528,
-  18529, 18530, 18532, 18533, 18534, 18536, 18539, 18540, 18542, 18544,
-  18545, 18546, 18547, 18553, 18558, 18569.
+  15790, 15969, 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512,
+  16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293, 17322,
+  17523, 17542, 17569, 17581, 17588, 17596, 17620, 17621, 17628, 17631,
+  17692, 17711, 17715, 17776, 17779, 17792, 17836, 17912, 17916, 17930,
+  17932, 17944, 17949, 17964, 17965, 17967, 17969, 17978, 17987, 17991,
+  17996, 17998, 17999, 18007, 18019, 18020, 18029, 18030, 18032, 18034,
+  18036, 18038, 18039, 18042, 18043, 18046, 18047, 18049, 18068, 18080,
+  18093, 18100, 18104, 18110, 18111, 18116, 18125, 18128, 18138, 18185,
+  18196, 18197, 18206, 18210, 18211, 18217, 18220, 18221, 18234, 18244,
+  18247, 18287, 18319, 18324, 18333, 18346, 18397, 18409, 18410, 18412,
+  18418, 18422, 18434, 18444, 18468, 18469, 18470, 18479, 18483, 18495,
+  18496, 18497, 18498, 18507, 18512, 18513, 18519, 18520, 18522, 18527,
+  18528, 18529, 18530, 18532, 18533, 18534, 18536, 18539, 18540, 18542,
+  18544, 18545, 18546, 18547, 18553, 18558, 18569.

 * Cache information can be queried via sysconf() function on s390 e.g. with
  _SC_LEVEL1_ICACHE_SIZE as argument.
--- a/math/auto-libm-test-in
+++ b/math/auto-libm-test-in
@ -1362,12 +1362,11 @@ expm1 0x6.289a78p-4
 expm1 0x6.1b4d318238d4a2a8p-4
 expm1 0x5.fb8dc64e91a74p-4
 expm1 0x3.735f497c4e67535cp-4
-# Bug 16353: underflow exception may be missing
-expm1 0x4.0000000000000028p-16384 missing-underflow
-expm1 min missing-underflow
-expm1 -min missing-underflow
-expm1 min_subnorm missing-underflow
-expm1 -min_subnorm missing-underflow
+expm1 0x4.0000000000000028p-16384
+expm1 min
+expm1 -min
+expm1 min_subnorm
+expm1 -min_subnorm

 fma 1.0 2.0 3.0
 fma 1.25 0.75 0.0625
--- a/math/auto-libm-test-out
+++ b/math/auto-libm-test-out
@ -109498,11 +109498,11 @@ expm1 0x3.735f497c4e67535cp-4
 = expm1 tonearest ldbl-128ibm 0x3.735f497c4e67535cp-4L : 0x3.d9dcef7e7e397c649290c708e4p-4L : inexact-ok
 = expm1 towardzero ldbl-128ibm 0x3.735f497c4e67535cp-4L : 0x3.d9dcef7e7e397c649290c708e3p-4L : inexact-ok
 = expm1 upward ldbl-128ibm 0x3.735f497c4e67535cp-4L : 0x3.d9dcef7e7e397c649290c708e4p-4L : inexact-ok
-expm1 0x4.0000000000000028p-16384 missing-underflow
-= expm1 downward flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward flt-32 0x8p-152f : 0x1p-148f : inexact-ok underflow underflow-ok errno-erange-ok
+expm1 0x4.0000000000000028p-16384
+= expm1 downward flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= expm1 tonearest flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= expm1 towardzero flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= expm1 upward flt-32 0x8p-152f : 0x1p-148f : inexact-ok underflow errno-erange-ok
 = expm1 downward dbl-64 0x8p-152 : 0x8p-152 : inexact-ok
 = expm1 tonearest dbl-64 0x8p-152 : 0x8p-152 : inexact-ok
 = expm1 towardzero dbl-64 0x8p-152 : 0x8p-152 : inexact-ok
@ -109547,10 +109547,10 @@ expm1 0x4.0000000000000028p-16384 missing-underflow
 = expm1 tonearest ldbl-128ibm 0x0p+0L : 0x0p+0L : inexact-ok
 = expm1 towardzero ldbl-128ibm 0x0p+0L : 0x0p+0L : inexact-ok
 = expm1 upward ldbl-128ibm 0x0p+0L : 0x0p+0L : inexact-ok
-= expm1 downward dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward dbl-64 0x4p-1076 : 0x8p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
+= expm1 downward dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= expm1 tonearest dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= expm1 towardzero dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= expm1 upward dbl-64 0x4p-1076 : 0x8p-1076 : inexact-ok underflow errno-erange-ok
 = expm1 downward ldbl-96-intel 0x4p-1076L : 0x4p-1076L : inexact-ok
 = expm1 tonearest ldbl-96-intel 0x4p-1076L : 0x4p-1076L : inexact-ok
 = expm1 towardzero ldbl-96-intel 0x4p-1076L : 0x4p-1076L : inexact-ok
@ -109563,10 +109563,10 @@ expm1 0x4.0000000000000028p-16384 missing-underflow
 = expm1 tonearest ldbl-128 0x4p-1076L : 0x4p-1076L : inexact-ok
 = expm1 towardzero ldbl-128 0x4p-1076L : 0x4p-1076L : inexact-ok
 = expm1 upward ldbl-128 0x4p-1076L : 0x4.0000000000000000000000000004p-1076L : inexact-ok
-= expm1 downward ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-128ibm 0x4p-1076L : 0x8p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
+= expm1 downward ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-128ibm 0x4p-1076L : 0x8p-1076L : inexact-ok underflow errno-erange-ok
 = expm1 downward ldbl-96-intel 0x4.0000000000000028p-16384L : 0x4.0000000000000028p-16384L : inexact-ok
 = expm1 tonearest ldbl-96-intel 0x4.0000000000000028p-16384L : 0x4.0000000000000028p-16384L : inexact-ok
 = expm1 towardzero ldbl-96-intel 0x4.0000000000000028p-16384L : 0x4.0000000000000028p-16384L : inexact-ok
@ -109579,7 +109579,7 @@ expm1 0x4.0000000000000028p-16384 missing-underflow
 = expm1 tonearest ldbl-128 0x4.0000000000000028p-16384L : 0x4.0000000000000028p-16384L : inexact-ok
 = expm1 towardzero ldbl-128 0x4.0000000000000028p-16384L : 0x4.0000000000000028p-16384L : inexact-ok
 = expm1 upward ldbl-128 0x4.0000000000000028p-16384L : 0x4.0000000000000028000000000004p-16384L : inexact-ok
-expm1 min missing-underflow
+expm1 min
 = expm1 downward flt-32 0x4p-128f : 0x4p-128f : inexact-ok underflow-ok errno-erange-ok
 = expm1 tonearest flt-32 0x4p-128f : 0x4p-128f : inexact-ok underflow-ok errno-erange-ok
 = expm1 towardzero flt-32 0x4p-128f : 0x4p-128f : inexact-ok underflow-ok errno-erange-ok
@ -109620,10 +109620,10 @@ expm1 min missing-underflow
 = expm1 tonearest ldbl-128 0x4p-1024L : 0x4p-1024L : inexact-ok
 = expm1 towardzero ldbl-128 0x4p-1024L : 0x4p-1024L : inexact-ok
 = expm1 upward ldbl-128 0x4p-1024L : 0x4.0000000000000000000000000004p-1024L : inexact-ok
-= expm1 downward ldbl-128ibm 0x4p-1024L : 0x4p-1024L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-128ibm 0x4p-1024L : 0x4p-1024L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-128ibm 0x4p-1024L : 0x4p-1024L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-128ibm 0x4p-1024L : 0x4.0000000000004p-1024L : inexact-ok underflow underflow-ok errno-erange-ok
+= expm1 downward ldbl-128ibm 0x4p-1024L : 0x4p-1024L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-128ibm 0x4p-1024L : 0x4p-1024L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-128ibm 0x4p-1024L : 0x4p-1024L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-128ibm 0x4p-1024L : 0x4.0000000000004p-1024L : inexact-ok underflow errno-erange-ok
 = expm1 downward ldbl-96-intel 0x4p-16384L : 0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 tonearest ldbl-96-intel 0x4p-16384L : 0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 towardzero ldbl-96-intel 0x4p-16384L : 0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
@ -109636,18 +109636,18 @@ expm1 min missing-underflow
 = expm1 tonearest ldbl-128 0x4p-16384L : 0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 towardzero ldbl-128 0x4p-16384L : 0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 upward ldbl-128 0x4p-16384L : 0x4.0000000000000000000000000004p-16384L : inexact-ok underflow-ok errno-erange-ok
-= expm1 downward ldbl-96-intel 0x2p-16384L : 0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-96-intel 0x2p-16384L : 0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-96-intel 0x2p-16384L : 0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-96-intel 0x2p-16384L : 0x2.0000000000000008p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
+= expm1 downward ldbl-96-intel 0x2p-16384L : 0x2p-16384L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-96-intel 0x2p-16384L : 0x2p-16384L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-96-intel 0x2p-16384L : 0x2p-16384L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-96-intel 0x2p-16384L : 0x2.0000000000000008p-16384L : inexact-ok underflow errno-erange-ok
 = expm1 downward ldbl-96-m68k 0x2p-16384L : 0x2p-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 tonearest ldbl-96-m68k 0x2p-16384L : 0x2p-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 towardzero ldbl-96-m68k 0x2p-16384L : 0x2p-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 upward ldbl-96-m68k 0x2p-16384L : 0x2.0000000000000004p-16384L : inexact-ok underflow-ok errno-erange-ok
-= expm1 downward ldbl-128 0x2p-16384L : 0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-128 0x2p-16384L : 0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-128 0x2p-16384L : 0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-128 0x2p-16384L : 0x2.0000000000000000000000000004p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
+= expm1 downward ldbl-128 0x2p-16384L : 0x2p-16384L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-128 0x2p-16384L : 0x2p-16384L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-128 0x2p-16384L : 0x2p-16384L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-128 0x2p-16384L : 0x2.0000000000000000000000000004p-16384L : inexact-ok underflow errno-erange-ok
 = expm1 downward dbl-64 0x8p-972 : 0x8p-972 : inexact-ok
 = expm1 tonearest dbl-64 0x8p-972 : 0x8p-972 : inexact-ok
 = expm1 towardzero dbl-64 0x8p-972 : 0x8p-972 : inexact-ok
@ -109668,7 +109668,7 @@ expm1 min missing-underflow
 = expm1 tonearest ldbl-128ibm 0x8p-972L : 0x8p-972L : inexact-ok underflow-ok errno-erange-ok
 = expm1 towardzero ldbl-128ibm 0x8p-972L : 0x8p-972L : inexact-ok underflow-ok errno-erange-ok
 = expm1 upward ldbl-128ibm 0x8p-972L : 0x8.00000000000000000000000004p-972L : inexact-ok underflow-ok errno-erange-ok
-expm1 -min missing-underflow
+expm1 -min
 = expm1 downward flt-32 -0x4p-128f : -0x4p-128f : inexact-ok underflow-ok errno-erange-ok
 = expm1 tonearest flt-32 -0x4p-128f : -0x4p-128f : inexact-ok underflow-ok errno-erange-ok
 = expm1 towardzero flt-32 -0x4p-128f : -0x3.fffff8p-128f : inexact-ok underflow-ok errno-erange-ok
@ -109709,10 +109709,10 @@ expm1 -min missing-underflow
 = expm1 tonearest ldbl-128 -0x4p-1024L : -0x4p-1024L : inexact-ok
 = expm1 towardzero ldbl-128 -0x4p-1024L : -0x3.fffffffffffffffffffffffffffep-1024L : inexact-ok
 = expm1 upward ldbl-128 -0x4p-1024L : -0x3.fffffffffffffffffffffffffffep-1024L : inexact-ok
-= expm1 downward ldbl-128ibm -0x4p-1024L : -0x4p-1024L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-128ibm -0x4p-1024L : -0x4p-1024L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-128ibm -0x4p-1024L : -0x3.ffffffffffffcp-1024L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-128ibm -0x4p-1024L : -0x3.ffffffffffffcp-1024L : inexact-ok underflow underflow-ok errno-erange-ok
+= expm1 downward ldbl-128ibm -0x4p-1024L : -0x4p-1024L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-128ibm -0x4p-1024L : -0x4p-1024L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-128ibm -0x4p-1024L : -0x3.ffffffffffffcp-1024L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-128ibm -0x4p-1024L : -0x3.ffffffffffffcp-1024L : inexact-ok underflow errno-erange-ok
 = expm1 downward ldbl-96-intel -0x4p-16384L : -0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 tonearest ldbl-96-intel -0x4p-16384L : -0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 towardzero ldbl-96-intel -0x4p-16384L : -0x3.fffffffffffffff8p-16384L : inexact-ok underflow-ok errno-erange-ok
@ -109725,18 +109725,18 @@ expm1 -min missing-underflow
 = expm1 tonearest ldbl-128 -0x4p-16384L : -0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 towardzero ldbl-128 -0x4p-16384L : -0x3.fffffffffffffffffffffffffffcp-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 upward ldbl-128 -0x4p-16384L : -0x3.fffffffffffffffffffffffffffcp-16384L : inexact-ok underflow-ok errno-erange-ok
-= expm1 downward ldbl-96-intel -0x2p-16384L : -0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-96-intel -0x2p-16384L : -0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-96-intel -0x2p-16384L : -0x1.fffffffffffffff8p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-96-intel -0x2p-16384L : -0x1.fffffffffffffff8p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
+= expm1 downward ldbl-96-intel -0x2p-16384L : -0x2p-16384L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-96-intel -0x2p-16384L : -0x2p-16384L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-96-intel -0x2p-16384L : -0x1.fffffffffffffff8p-16384L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-96-intel -0x2p-16384L : -0x1.fffffffffffffff8p-16384L : inexact-ok underflow errno-erange-ok
 = expm1 downward ldbl-96-m68k -0x2p-16384L : -0x2p-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 tonearest ldbl-96-m68k -0x2p-16384L : -0x2p-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 towardzero ldbl-96-m68k -0x2p-16384L : -0x1.fffffffffffffffcp-16384L : inexact-ok underflow-ok errno-erange-ok
 = expm1 upward ldbl-96-m68k -0x2p-16384L : -0x1.fffffffffffffffcp-16384L : inexact-ok underflow-ok errno-erange-ok
-= expm1 downward ldbl-128 -0x2p-16384L : -0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-128 -0x2p-16384L : -0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-128 -0x2p-16384L : -0x1.fffffffffffffffffffffffffffcp-16384L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-128 -0x2p-16384L : -0x1.fffffffffffffffffffffffffffcp-16384L : inexact-ok underflow underflow-ok errno-erange-ok
+= expm1 downward ldbl-128 -0x2p-16384L : -0x2p-16384L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-128 -0x2p-16384L : -0x2p-16384L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-128 -0x2p-16384L : -0x1.fffffffffffffffffffffffffffcp-16384L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-128 -0x2p-16384L : -0x1.fffffffffffffffffffffffffffcp-16384L : inexact-ok underflow errno-erange-ok
 = expm1 downward dbl-64 -0x8p-972 : -0x8p-972 : inexact-ok
 = expm1 tonearest dbl-64 -0x8p-972 : -0x8p-972 : inexact-ok
 = expm1 towardzero dbl-64 -0x8p-972 : -0x7.ffffffffffffcp-972 : inexact-ok
@ -109757,11 +109757,11 @@ expm1 -min missing-underflow
 = expm1 tonearest ldbl-128ibm -0x8p-972L : -0x8p-972L : inexact-ok underflow-ok errno-erange-ok
 = expm1 towardzero ldbl-128ibm -0x8p-972L : -0x7.fffffffffffffffffffffffffcp-972L : inexact-ok underflow-ok errno-erange-ok
 = expm1 upward ldbl-128ibm -0x8p-972L : -0x7.fffffffffffffffffffffffffcp-972L : inexact-ok underflow-ok errno-erange-ok
-expm1 min_subnorm missing-underflow
-= expm1 downward flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward flt-32 0x8p-152f : 0x1p-148f : inexact-ok underflow underflow-ok errno-erange-ok
+expm1 min_subnorm
+= expm1 downward flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= expm1 tonearest flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= expm1 towardzero flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= expm1 upward flt-32 0x8p-152f : 0x1p-148f : inexact-ok underflow errno-erange-ok
 = expm1 downward dbl-64 0x8p-152 : 0x8p-152 : inexact-ok
 = expm1 tonearest dbl-64 0x8p-152 : 0x8p-152 : inexact-ok
 = expm1 towardzero dbl-64 0x8p-152 : 0x8p-152 : inexact-ok
@ -109782,10 +109782,10 @@ expm1 min_subnorm missing-underflow
 = expm1 tonearest ldbl-128ibm 0x8p-152L : 0x8p-152L : inexact-ok
 = expm1 towardzero ldbl-128ibm 0x8p-152L : 0x8p-152L : inexact-ok
 = expm1 upward ldbl-128ibm 0x8p-152L : 0x8.00000000000000000000000004p-152L : inexact-ok
-= expm1 downward dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward dbl-64 0x4p-1076 : 0x8p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
+= expm1 downward dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= expm1 tonearest dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= expm1 towardzero dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= expm1 upward dbl-64 0x4p-1076 : 0x8p-1076 : inexact-ok underflow errno-erange-ok
 = expm1 downward ldbl-96-intel 0x4p-1076L : 0x4p-1076L : inexact-ok
 = expm1 tonearest ldbl-96-intel 0x4p-1076L : 0x4p-1076L : inexact-ok
 = expm1 towardzero ldbl-96-intel 0x4p-1076L : 0x4p-1076L : inexact-ok
@ -109798,39 +109798,39 @@ expm1 min_subnorm missing-underflow
 = expm1 tonearest ldbl-128 0x4p-1076L : 0x4p-1076L : inexact-ok
 = expm1 towardzero ldbl-128 0x4p-1076L : 0x4p-1076L : inexact-ok
 = expm1 upward ldbl-128 0x4p-1076L : 0x4.0000000000000000000000000004p-1076L : inexact-ok
-= expm1 downward ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-128ibm 0x4p-1076L : 0x8p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 downward ldbl-96-intel 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-96-intel 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-96-intel 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-96-intel 0x8p-16448L : 0x1p-16444L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 downward ldbl-96-m68k 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-96-m68k 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-96-m68k 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-96-m68k 0x8p-16448L : 0xcp-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 downward ldbl-128 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-128 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-128 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-128 0x8p-16448L : 0x8.000000000004p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 downward ldbl-96-m68k 0x4p-16448L : 0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-96-m68k 0x4p-16448L : 0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-96-m68k 0x4p-16448L : 0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-96-m68k 0x4p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 downward ldbl-128 0x4p-16448L : 0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-128 0x4p-16448L : 0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-128 0x4p-16448L : 0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-128 0x4p-16448L : 0x4.000000000004p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 downward ldbl-128 0x4p-16496L : 0x4p-16496L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-128 0x4p-16496L : 0x4p-16496L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-128 0x4p-16496L : 0x4p-16496L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-128 0x4p-16496L : 0x8p-16496L : inexact-ok underflow underflow-ok errno-erange-ok
-expm1 -min_subnorm missing-underflow
-= expm1 downward flt-32 -0x8p-152f : -0x8p-152f : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest flt-32 -0x8p-152f : -0x8p-152f : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero flt-32 -0x8p-152f : -0x0p+0f : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward flt-32 -0x8p-152f : -0x0p+0f : inexact-ok underflow underflow-ok errno-erange-ok
+= expm1 downward ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-128ibm 0x4p-1076L : 0x8p-1076L : inexact-ok underflow errno-erange-ok
+= expm1 downward ldbl-96-intel 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-96-intel 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-96-intel 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-96-intel 0x8p-16448L : 0x1p-16444L : inexact-ok underflow errno-erange-ok
+= expm1 downward ldbl-96-m68k 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-96-m68k 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-96-m68k 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-96-m68k 0x8p-16448L : 0xcp-16448L : inexact-ok underflow errno-erange-ok
+= expm1 downward ldbl-128 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-128 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-128 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-128 0x8p-16448L : 0x8.000000000004p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 downward ldbl-96-m68k 0x4p-16448L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-96-m68k 0x4p-16448L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-96-m68k 0x4p-16448L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-96-m68k 0x4p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 downward ldbl-128 0x4p-16448L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-128 0x4p-16448L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-128 0x4p-16448L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-128 0x4p-16448L : 0x4.000000000004p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 downward ldbl-128 0x4p-16496L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-128 0x4p-16496L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-128 0x4p-16496L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-128 0x4p-16496L : 0x8p-16496L : inexact-ok underflow errno-erange-ok
+expm1 -min_subnorm
+= expm1 downward flt-32 -0x8p-152f : -0x8p-152f : inexact-ok underflow errno-erange-ok
+= expm1 tonearest flt-32 -0x8p-152f : -0x8p-152f : inexact-ok underflow errno-erange-ok
+= expm1 towardzero flt-32 -0x8p-152f : -0x0p+0f : inexact-ok underflow errno-erange-ok
+= expm1 upward flt-32 -0x8p-152f : -0x0p+0f : inexact-ok underflow errno-erange-ok
 = expm1 downward dbl-64 -0x8p-152 : -0x8p-152 : inexact-ok
 = expm1 tonearest dbl-64 -0x8p-152 : -0x8p-152 : inexact-ok
 = expm1 towardzero dbl-64 -0x8p-152 : -0x7.ffffffffffffcp-152 : inexact-ok
@ -109851,10 +109851,10 @@ expm1 -min_subnorm missing-underflow
 = expm1 tonearest ldbl-128ibm -0x8p-152L : -0x8p-152L : inexact-ok
 = expm1 towardzero ldbl-128ibm -0x8p-152L : -0x7.fffffffffffffffffffffffffep-152L : inexact-ok
 = expm1 upward ldbl-128ibm -0x8p-152L : -0x7.fffffffffffffffffffffffffep-152L : inexact-ok
-= expm1 downward dbl-64 -0x4p-1076 : -0x4p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest dbl-64 -0x4p-1076 : -0x4p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero dbl-64 -0x4p-1076 : -0x0p+0 : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward dbl-64 -0x4p-1076 : -0x0p+0 : inexact-ok underflow underflow-ok errno-erange-ok
+= expm1 downward dbl-64 -0x4p-1076 : -0x4p-1076 : inexact-ok underflow errno-erange-ok
+= expm1 tonearest dbl-64 -0x4p-1076 : -0x4p-1076 : inexact-ok underflow errno-erange-ok
+= expm1 towardzero dbl-64 -0x4p-1076 : -0x0p+0 : inexact-ok underflow errno-erange-ok
+= expm1 upward dbl-64 -0x4p-1076 : -0x0p+0 : inexact-ok underflow errno-erange-ok
 = expm1 downward ldbl-96-intel -0x4p-1076L : -0x4p-1076L : inexact-ok
 = expm1 tonearest ldbl-96-intel -0x4p-1076L : -0x4p-1076L : inexact-ok
 = expm1 towardzero ldbl-96-intel -0x4p-1076L : -0x3.fffffffffffffffcp-1076L : inexact-ok
@ -109867,34 +109867,34 @@ expm1 -min_subnorm missing-underflow
 = expm1 tonearest ldbl-128 -0x4p-1076L : -0x4p-1076L : inexact-ok
 = expm1 towardzero ldbl-128 -0x4p-1076L : -0x3.fffffffffffffffffffffffffffep-1076L : inexact-ok
 = expm1 upward ldbl-128 -0x4p-1076L : -0x3.fffffffffffffffffffffffffffep-1076L : inexact-ok
-= expm1 downward ldbl-128ibm -0x4p-1076L : -0x4p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-128ibm -0x4p-1076L : -0x4p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-128ibm -0x4p-1076L : -0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-128ibm -0x4p-1076L : -0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 downward ldbl-96-intel -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-96-intel -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-96-intel -0x8p-16448L : -0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-96-intel -0x8p-16448L : -0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 downward ldbl-96-m68k -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-96-m68k -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-96-m68k -0x8p-16448L : -0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-96-m68k -0x8p-16448L : -0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 downward ldbl-128 -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-128 -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-128 -0x8p-16448L : -0x7.fffffffffffcp-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-128 -0x8p-16448L : -0x7.fffffffffffcp-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 downward ldbl-96-m68k -0x4p-16448L : -0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-96-m68k -0x4p-16448L : -0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-96-m68k -0x4p-16448L : -0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-96-m68k -0x4p-16448L : -0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 downward ldbl-128 -0x4p-16448L : -0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-128 -0x4p-16448L : -0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-128 -0x4p-16448L : -0x3.fffffffffffcp-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-128 -0x4p-16448L : -0x3.fffffffffffcp-16448L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 downward ldbl-128 -0x4p-16496L : -0x4p-16496L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 tonearest ldbl-128 -0x4p-16496L : -0x4p-16496L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 towardzero ldbl-128 -0x4p-16496L : -0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
-= expm1 upward ldbl-128 -0x4p-16496L : -0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
+= expm1 downward ldbl-128ibm -0x4p-1076L : -0x4p-1076L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-128ibm -0x4p-1076L : -0x4p-1076L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-128ibm -0x4p-1076L : -0x0p+0L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-128ibm -0x4p-1076L : -0x0p+0L : inexact-ok underflow errno-erange-ok
+= expm1 downward ldbl-96-intel -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-96-intel -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-96-intel -0x8p-16448L : -0x0p+0L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-96-intel -0x8p-16448L : -0x0p+0L : inexact-ok underflow errno-erange-ok
+= expm1 downward ldbl-96-m68k -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-96-m68k -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-96-m68k -0x8p-16448L : -0x4p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-96-m68k -0x8p-16448L : -0x4p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 downward ldbl-128 -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-128 -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-128 -0x8p-16448L : -0x7.fffffffffffcp-16448L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-128 -0x8p-16448L : -0x7.fffffffffffcp-16448L : inexact-ok underflow errno-erange-ok
+= expm1 downward ldbl-96-m68k -0x4p-16448L : -0x4p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-96-m68k -0x4p-16448L : -0x4p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-96-m68k -0x4p-16448L : -0x0p+0L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-96-m68k -0x4p-16448L : -0x0p+0L : inexact-ok underflow errno-erange-ok
+= expm1 downward ldbl-128 -0x4p-16448L : -0x4p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-128 -0x4p-16448L : -0x4p-16448L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-128 -0x4p-16448L : -0x3.fffffffffffcp-16448L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-128 -0x4p-16448L : -0x3.fffffffffffcp-16448L : inexact-ok underflow errno-erange-ok
+= expm1 downward ldbl-128 -0x4p-16496L : -0x4p-16496L : inexact-ok underflow errno-erange-ok
+= expm1 tonearest ldbl-128 -0x4p-16496L : -0x4p-16496L : inexact-ok underflow errno-erange-ok
+= expm1 towardzero ldbl-128 -0x4p-16496L : -0x0p+0L : inexact-ok underflow errno-erange-ok
+= expm1 upward ldbl-128 -0x4p-16496L : -0x0p+0L : inexact-ok underflow errno-erange-ok
 fma 1.0 2.0 3.0
 = fma downward flt-32 0x1p+0f 0x2p+0f 0x3p+0f : 0x5p+0f :
 = fma tonearest flt-32 0x1p+0f 0x2p+0f 0x3p+0f : 0x5p+0f :
--- a/sysdeps/i386/fpu/s_expm1.S
+++ b/sysdeps/i386/fpu/s_expm1.S
@ -37,6 +37,13 @@ one:	.double 1.0
 l2e:	.tfloat 1.442695040888963407359924681002
 	ASM_SIZE_DIRECTIVE(l2e)

+	.section .rodata.cst8,"aM",@progbits,8
+
+	.p2align 3
+	.type dbl_min,@object
+dbl_min:	.byte 0, 0, 0, 0, 0, 0, 0x10, 0
+	ASM_SIZE_DIRECTIVE(dbl_min)
+
 #ifdef PIC
 #define MO(op) op##@GOTOFF(%edx)
 #else
@ -74,6 +81,21 @@ ENTRY(__expm1)
 #ifdef	PIC
 	LOAD_PIC_REG (dx)
 #endif
+	fld	%st
+	fabs
+	fcoml	MO(dbl_min)
+	fstp	%st
+	fnstsw
+	sahf
+	jae	5f
+	subl	$8, %esp
+	cfi_adjust_cfa_offset (8)
+	fld	%st(0)
+	fmul	%st(0)
+	fstpl	(%esp)
+	addl	$8, %esp
+	cfi_adjust_cfa_offset (-8)
+	ret

 5:	fldt	MO(l2e)		// log2(e) : x
 	fmulp			// log2(e)*x
--- a/sysdeps/i386/fpu/s_expm1f.S
+++ b/sysdeps/i386/fpu/s_expm1f.S
@ -37,6 +37,13 @@ one:	.double 1.0
 l2e:	.tfloat 1.442695040888963407359924681002
 	ASM_SIZE_DIRECTIVE(l2e)

+	.section .rodata.cst4,"aM",@progbits,4
+
+	.p2align 2
+	.type flt_min,@object
+flt_min:	.byte 0, 0, 0x80, 0
+	ASM_SIZE_DIRECTIVE(flt_min)
+
 #ifdef PIC
 #define MO(op) op##@GOTOFF(%edx)
 #else
@ -74,6 +81,21 @@ ENTRY(__expm1f)
 #ifdef	PIC
 	LOAD_PIC_REG (dx)
 #endif
+	fld	%st
+	fabs
+	fcoms	MO(flt_min)
+	fstp	%st
+	fnstsw
+	sahf
+	jae	5f
+	subl	$4, %esp
+	cfi_adjust_cfa_offset (4)
+	fld	%st(0)
+	fmul	%st(0)
+	fstps	(%esp)
+	addl	$4, %esp
+	cfi_adjust_cfa_offset (-4)
+	ret

 5:	fldt	MO(l2e)		// log2(e) : x
 	fmulp			// log2(e)*x
--- a/sysdeps/ieee754/dbl-64/s_expm1.c
+++ b/sysdeps/ieee754/dbl-64/s_expm1.c
@ -109,6 +109,7 @@
 */

 #include <errno.h>
+#include <float.h>
 #include <math.h>
 #include <math_private.h>
 #define one Q[0]
@ -194,6 +195,11 @@ __expm1 (double x)
    }
  else if (hx < 0x3c900000)             /* when |x|<2**-54, return x */
    {
+      if (fabs (x) < DBL_MIN)
+	{
+	  double force_underflow = x * x;
+	  math_force_eval (force_underflow);
+	}
      t = huge + x;     /* return x with inexact flags when x!=0 */
      return x - (t - (huge + x));
    }
--- a/sysdeps/ieee754/dbl-64/wordsize-64/e_cosh.c
+++ b/sysdeps/ieee754/dbl-64/wordsize-64/e_cosh.c
@ -50,9 +50,10 @@ __ieee754_cosh (double x)
 	if (ix < 0x40360000) {
 	    /* |x| in [0,0.5*ln2], return 1+expm1(|x|)^2/(2*exp(|x|)) */
 		if(ix<0x3fd62e43) {
+		    if (ix<0x3c800000)			/* cosh(tiny) = 1 */
+		      return one;
 		    t = __expm1(fabs(x));
 		    w = one+t;
-		    if (ix<0x3c800000) return w;	/* cosh(tiny) = 1 */
 		    return one+(t*t)/(w+w);
 		}

--- a/sysdeps/ieee754/flt-32/s_expm1f.c
+++ b/sysdeps/ieee754/flt-32/s_expm1f.c
@ -14,6 +14,7 @@
 */

 #include <errno.h>
+#include <float.h>
 #include <math.h>
 #include <math_private.h>

@ -80,6 +81,11 @@ __expm1f(float x)
 	    c  = (hi-x)-lo;
 	}
 	else if(hx < 0x33000000) {	/* when |x|<2**-25, return x */
+	    if (fabsf (x) < FLT_MIN)
+	      {
+		float force_underflow = x * x;
+		math_force_eval (force_underflow);
+	      }
 	    t = huge+x;	/* return x with inexact flags when x!=0 */
 	    return x - (t-(huge+x));
 	}