+2012-04-02 Bruno Haible <bruno@clisp.org>
+
+ logb: Provide replacement and workarounds.
+ * lib/math.in.h (logb): Ensure declaration. Replace if REPLACE_LOGB
+ is 1.
+ * lib/logb.c: New file.
+ * m4/logb.m4 (gl_FUNC_LOGB_WORKS): New macro.
+ (gl_FUNC_LOGB): Invoke it. Set HAVE_LOGB, REPLACE_LOGB.
+ * m4/math_h.m4 (gl_MATH_H_DEFAULTS): Initialize REPLACE_LOGB.
+ * modules/math (Makefile.am): Substitute REPLACE_LOGB.
+ * modules/logb (Files): Add lib/logb.c.
+ (Depends-on): Add isfinite, frexp, isnand.
+ (configure.ac): Compile the replacement code logb.c if needed.
+ * tests/test-math-c++.cc: Check the declaration of logb.
+ * doc/posix-functions/logb.texi: Mention the replacement and the bug
+ with subnormal numbers.
+
+2012-04-02 Bruno Haible <bruno@clisp.org>
+
+ log10* tests: Speed up.
+ * tests/test-log10.h (test_function): Reduce amount of random numbers
+ to test.
+
2012-04-01 Bruno Haible <bruno@clisp.org>
+ logf-ieee: Fix test whether logf works.
+ * m4/logf.m4 (gl_FUNC_LOGF): Fix typo in test program.
+
+2012-04-01 Bruno Haible <bruno@clisp.org>
+
+ log10l: Work around log10l-ieee test failure on IRIX 6.5.
+ * lib/log10l.c: Include <float.h>
+ (log10l): On IRIX, normalize the +Infinity value.
+ * modules/log10l (Depends-on): Add 'float'.
+ * doc/posix-functions/log10l.texi: Mention the IRIX problem with
+ +Infinity.
+
+ log10f-ieee: Work around test failure on NetBSD 5.1.
+ * m4/log10f-ieee.m4: New file.
+ * m4/log10f.m4 (gl_FUNC_LOG10F): If gl_FUNC_LOG10F_IEEE is present,
+ test whether log10f works with a negative argument. Replace it if not.
+ * lib/log10f.c (log10f): For negative arguments, return NaN.
+ * modules/log10f-ieee (Files): Add m4/log10f-ieee.m4.
+ (configure.ac): Invoke gl_FUNC_LOG10F_IEEE.
+ * doc/posix-functions/log10f.texi: Mention the log10f-ieee module.
+
log10f-ieee: Work around test failure on Solaris 9.
* modules/log10f-ieee (Depends-on): Add log10-ieee.
(configure.ac): Require gl_FUNC_LOG10F.