Mercurial > hg > octave-lojdl > gnulib-hg
changeset 16763:a56cad559c24
math: Provide FP_ILOGB0 and FP_ILOGBNAN.
* lib/math.in.h (FP_ILOGB0, FP_ILOGBNAN): Define fallback.
* tests/test-math.c: Check that FP_ILOGB0, FP_ILOGBNAN are defined.
(main): Check their values.
* doc/posix-headers/math.texi: Mention the FP_ILOGB0, FP_ILOGBNAN
problem.
| author | Bruno Haible <bruno@clisp.org> |
|---|---|
| date | Tue, 03 Apr 2012 17:04:46 +0200 |
| parents | d1ceeee15d92 |
| children | d48f227b07b4 |
| files | ChangeLog doc/posix-headers/math.texi lib/math.in.h tests/test-math.c |
| diffstat | 4 files changed, 55 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,12 @@ +2012-04-03 Bruno Haible <bruno@clisp.org> + + math: Provide FP_ILOGB0 and FP_ILOGBNAN. + * lib/math.in.h (FP_ILOGB0, FP_ILOGBNAN): Define fallback. + * tests/test-math.c: Check that FP_ILOGB0, FP_ILOGBNAN are defined. + (main): Check their values. + * doc/posix-headers/math.texi: Mention the FP_ILOGB0, FP_ILOGBNAN + problem. + 2012-04-03 Bruno Haible <bruno@clisp.org> Tests for module 'logbl-ieee'.
--- a/doc/posix-headers/math.texi +++ b/doc/posix-headers/math.texi @@ -30,6 +30,11 @@ The macros @code{HUGE_VALF} and @code{HUGE_VALL} are not defined on some platforms: glibc/HPPA, glibc/SPARC, AIX 5.1, IRIX 6.5, Solaris 9, MSVC 9. + +@item +The macros @code{FP_ILOGB0} and @code{FP_ILOGBNAN} are not defined on some +platforms: +NetBSD 5.1, AIX 5.1, IRIX 6.5, Solaris 9, MSVC 9. @end itemize Portability problems not fixed by Gnulib:
--- a/lib/math.in.h +++ b/lib/math.in.h @@ -179,6 +179,29 @@ # endif #endif + +/* Ensure FP_ILOGB0 and FP_ILOGBNAN are defined. */ +#if !(defined FP_ILOGB0 && defined FP_ILOGBNAN) +# if defined __NetBSD__ || defined __sgi + /* NetBSD, IRIX 6.5: match what ilogb() does */ +# define FP_ILOGB0 (- 2147483647 - 1) /* INT_MIN */ +# define FP_ILOGBNAN (- 2147483647 - 1) /* INT_MIN */ +# elif defined _AIX + /* AIX 5.1: match what ilogb() does in AIX >= 5.2 */ +# define FP_ILOGB0 (- 2147483647 - 1) /* INT_MIN */ +# define FP_ILOGBNAN 2147483647 /* INT_MAX */ +# elif defined __sun + /* Solaris 9: match what ilogb() does */ +# define FP_ILOGB0 (- 2147483647) /* - INT_MAX */ +# define FP_ILOGBNAN 2147483647 /* INT_MAX */ +# else + /* Gnulib defined values. */ +# define FP_ILOGB0 (- 2147483647) /* - INT_MAX */ +# define FP_ILOGBNAN (- 2147483647 - 1) /* INT_MIN */ +# endif +#endif + + #if @GNULIB_ACOSF@ # if !@HAVE_ACOSF@ # undef acosf
--- a/tests/test-math.c +++ b/tests/test-math.c @@ -40,6 +40,18 @@ choke me #endif +#ifndef FP_ILOGB0 +# error FP_ILOGB0 should be defined +choke me +#endif + +#ifndef FP_ILOGBNAN +# error FP_ILOGBNAN should be defined +choke me +#endif + +#include <limits.h> + #include "macros.h" #if 0 @@ -82,5 +94,11 @@ ASSERT (numeric_equall (HUGE_VALL, HUGE_VALL + HUGE_VALL)); + /* Check the value of FP_ILOGB0. */ + ASSERT (FP_ILOGB0 == INT_MIN || FP_ILOGB0 == - INT_MAX); + + /* Check the value of FP_ILOGBNAN. */ + ASSERT (FP_ILOGBNAN == INT_MIN || FP_ILOGBNAN == INT_MAX); + return 0; }