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_log2f.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_log2f.c')
| -rw-r--r-- | sysdeps/libm-ieee754/s_log2f.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sysdeps/libm-ieee754/s_log2f.c b/sysdeps/libm-ieee754/s_log2f.c index da9dfb8324..2377acd36a 100644 --- a/sysdeps/libm-ieee754/s_log2f.c +++ b/sysdeps/libm-ieee754/s_log2f.c @@ -23,6 +23,7 @@ static const float #else static float #endif +ln2 = 0.69314718055994530942, two25 = 3.355443200e+07, /* 0x4c000000 */ Lg1 = 6.6666668653e-01, /* 3F2AAAAB */ Lg2 = 4.0000000596e-01, /* 3ECCCCCD */ @@ -69,7 +70,7 @@ static float zero = 0.0; if((0x007fffff&(15+ix))<16) { /* |f| < 2**-20 */ if(f==zero) return dk; R = f*f*((float)0.5-(float)0.33333333333333333*f); - return dk-(R-f); + return dk-(R-f)/ln2; } s = f/((float)2.0+f); z = s*s; @@ -82,9 +83,9 @@ static float zero = 0.0; R = t2+t1; if(i>0) { hfsq=(float)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; } } weak_alias (__log2f, log2f) |