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| author |   Andreas Jaeger <aj@suse.de> | 2001-06-19 12:41:02 +0000 |
|---|---|---|
| committer | Andreas Jaeger <aj@suse.de> | 2001-06-19 12:41:02 +0000 |
| commit | 20f421e1a1bdc4eb203198825120975a52dd1e30 (patch) | |
| tree | ea998677a162a1ef2bdbe815047feccfcc5ce884 /sysdeps | |
| parent | 128 bit implementation of tanh. (diff) | |
| download | glibc-20f421e1a1bdc4eb203198825120975a52dd1e30.tar.gz glibc-20f421e1a1bdc4eb203198825120975a52dd1e30.tar.bz2 glibc-20f421e1a1bdc4eb203198825120975a52dd1e30.zip | |
Update
2001-06-19 Andreas Jaeger <aj@suse.de>
* sysdeps/ieee754/ldbl-128/s_tanhl.c: New file.
* math/libm-test.inc (tanh_test): Test for 2^-56.
* sysdeps/ieee754/ldbl-96/s_tanhl.c (__tanhl): Make sure result
equals argument when x < 2^-55.
Patches by Stephen L. Moshier <moshier@na-net.ornl.gov>.
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/ieee754/ldbl-96/s_tanhl.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/ieee754/ldbl-96/s_tanhl.c b/sysdeps/ieee754/ldbl-96/s_tanhl.c index 5c0ac9a95d..45cea903e3 100644 --- a/sysdeps/ieee754/ldbl-96/s_tanhl.c +++ b/sysdeps/ieee754/ldbl-96/s_tanhl.c @@ -78,7 +78,7 @@ static long double one=1.0, two=2.0, tiny = 1.0e-4900L; if ((ix|j0|j1) == 0) return x; /* x == +- 0 */ if (ix<0x3fc8) /* |x|<2**-55 */ - return x*(one+x); /* tanh(small) = small */ + return x*(one+tiny); /* tanh(small) = small */ if (ix>=0x3fff) { /* |x|>=1 */ t = __expm1l(two*fabsl(x)); z = one - two/(t+two); |