diff options
| author | Ulrich Drepper <drepper@redhat.com> | 1998-02-26 11:20:59 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1998-02-26 11:20:59 +0000 |
| commit | d111572f2f7c595060b9bafcadba98d5391d464c (patch) | |
| tree | 6ede0af6714c7586d9f52caa90118ef6af4b21e0 /sysdeps/libm-ieee754/s_log2.c | |
| parent | 14e9dd679a43ef9eb90adc0764152045caab6146 (diff) | |
| download | glibc-d111572f2f7c595060b9bafcadba98d5391d464c.tar.gz glibc-d111572f2f7c595060b9bafcadba98d5391d464c.tar.xz glibc-d111572f2f7c595060b9bafcadba98d5391d464c.zip | |
Update.
1998-02-26 Ulrich Drepper <drepper@cygnus.com> * nis/ypclnt.c (yp_master): Check result of strdup. Patch by Thorsten Kukuk. 1998-02-26 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * nis/ypclnt.c: Give clnt handle after error checking free, change return codes to fix problems with rpc.nisd in YP mode on Ultra's. 1998-02-26 09:00 Ulrich Drepper <drepper@cygnus.com> * misc/fstab.c: Partly rewritten to use dynamically allocated buffer. Patch by Joe Keane <jgk@jgk.org>. * misc/fstab.h (struct fstab): Change fs_type member to be const. * misc/fstab.c: Remove casts in fs_type assignments. 1998-02-26 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/i386/fpu/bits/fenv.h: Correct typo. ISO C 9X defines FE_TOWARDZERO and not FE_TOWARDSZERO. Reported by H.J. Lu. * sysdeps/sparc/sparc64/fpu/bits/fenv.h: Likewise. * sysdeps/sparc/sparc32/fpu/bits/fenv.h: Likewise. * sysdeps/powerpc/bits/fenv.h: Likewise. * sysdeps/m68k/fpu/bits/fenv.h: Likewise. * sysdeps/generic/bits/fenv.h: Likewise. * sysdeps/alpha/fpu/bits/fenv.h: Likewise. * sysdeps/i386/fpu/fesetenv.c (fesetenv): Likewise. * sysdeps/powerpc/test-arith.c (main): Likewise. 1998-02-25 Ulrich Drepper <drepper@cygnus.com> * sysdeps/i386/fpu/bits/mathinline.h: Also fix i386 versions of the comparison macros. 1998-02-21 20:14 H.J. Lu <hjl@gnu.org> * sysdeps/libm-ieee754/s_log2.c (ln2): Added. (__log2): Fixed return values. * sysdeps/libm-ieee754/s_log2f.c: Likewise. 1998-02-25 Ulrich Drepper <drepper@cygnus.com> * math/math.h (isunordered): Rename local variables to ensure correct code. Reported by HJ Lu. 1998-02-25 10:34 Ulrich Drepper <drepper@cygnus.com> * sysdpes/i386/fpu/bits/mathinline.h (isgreater, isgreaterequal, isless, islessequal, islessgreater, isunordered): Fix syntax for fucompip instruction. (isless, islessequal): Fix logic. 1998-02-21 Andreas Jaeger <aj@arthur.rhein-neckar.de> * math/libm-test.c (sqrt_test): Add test for sqrt(2). (comparisons_test): New tests for comparison macros.
Diffstat (limited to 'sysdeps/libm-ieee754/s_log2.c')
| -rw-r--r-- | sysdeps/libm-ieee754/s_log2.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sysdeps/libm-ieee754/s_log2.c b/sysdeps/libm-ieee754/s_log2.c index 93c20b3db1..7379ce85e7 100644 --- a/sysdeps/libm-ieee754/s_log2.c +++ b/sysdeps/libm-ieee754/s_log2.c @@ -62,6 +62,7 @@ static const double #else static double #endif +ln2 = 0.69314718055994530942, two54 = 1.80143985094819840000e+16, /* 43500000 00000000 */ Lg1 = 6.666666666666735130e-01, /* 3FE55555 55555593 */ Lg2 = 3.999999999940941908e-01, /* 3FD99999 9997FA04 */ @@ -109,7 +110,7 @@ static double zero = 0.0; if((0x000fffff&(2+hx))<3) { /* |f| < 2**-20 */ if(f==zero) return dk; R = f*f*(0.5-0.33333333333333333*f); - return dk-(R-f); + return dk-(R-f)/ln2; } s = f/(2.0+f); z = s*s; @@ -122,9 +123,9 @@ static double zero = 0.0; R = t2+t1; if(i>0) { hfsq=0.5*f*f; - return dk-((hfsq-(s*(hfsq+R)))-f); + return dk-((hfsq-(s*(hfsq+R)))-f)/ln2; } else { - return dk-((s*(f-R))-f); + return dk-((s*(f-R))-f)/ln2; } } |