Mercurial > hg > octave-lojdl > gnulib-hg
changeset 16514:befd75611259
New module 'hypotf'.
* lib/math.in.h (hypotf): New declaration.
* lib/hypotf.c: New file.
* m4/hypotf.m4: New file.
* m4/math_h.m4 (gl_MATH_H): Test whether hypotf is declared.
(gl_MATH_H_DEFAULTS): Initialize GNULIB_HYPOTF, HAVE_HYPOTF,
REPLACE_HYPOTF.
* modules/math (Makefile.am): Substitute GNULIB_HYPOTF, HAVE_HYPOTF,
REPLACE_HYPOTF.
* modules/hypotf: New file.
* tests/test-math-c++.cc: Check the hypotf declaration.
* doc/posix-functions/hypotf.texi: Mention the new module.
| author | Bruno Haible <bruno@clisp.org> |
|---|---|
| date | Wed, 29 Feb 2012 13:22:12 +0100 |
| parents | f42c8eb008b8 |
| children | 026ce065f317 |
| files | ChangeLog doc/posix-functions/hypotf.texi lib/hypotf.c lib/math.in.h m4/hypotf.m4 m4/math_h.m4 modules/hypotf modules/math tests/test-math-c++.cc |
| diffstat | 9 files changed, 197 insertions(+), 6 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,18 @@ 2012-02-29 Bruno Haible <bruno@clisp.org> + New module 'hypotf'. + * lib/math.in.h (hypotf): New declaration. + * lib/hypotf.c: New file. + * m4/hypotf.m4: New file. + * m4/math_h.m4 (gl_MATH_H): Test whether hypotf is declared. + (gl_MATH_H_DEFAULTS): Initialize GNULIB_HYPOTF, HAVE_HYPOTF, + REPLACE_HYPOTF. + * modules/math (Makefile.am): Substitute GNULIB_HYPOTF, HAVE_HYPOTF, + REPLACE_HYPOTF. + * modules/hypotf: New file. + * tests/test-math-c++.cc: Check the hypotf declaration. + * doc/posix-functions/hypotf.texi: Mention the new module. + hypot: Prepare for hypotf module. * m4/hypot.m4: New file. * modules/hypot (Files): Add m4/hypot.m4.
--- a/doc/posix-functions/hypotf.texi +++ b/doc/posix-functions/hypotf.texi @@ -4,15 +4,18 @@ POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/hypotf.html} -Gnulib module: --- +Gnulib module: hypotf Portability problems fixed by Gnulib: @itemize +@item +This function is missing on some platforms: +Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 9, MSVC 9. +@item +This function produces wrong values on some platforms: +NetBSD 5.1, OpenBSD 4.9. @end itemize Portability problems not fixed by Gnulib: @itemize -@item -This function is missing on some platforms: -Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 9, MSVC 9. @end itemize
new file mode 100644 --- /dev/null +++ b/lib/hypotf.c @@ -0,0 +1,26 @@ +/* Hypotenuse of a right-angled triangle. + Copyright (C) 2012 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <config.h> + +/* Specification. */ +#include <math.h> + +float +hypotf (float x, float y) +{ + return (float) hypot ((double) x, (double) y); +}
--- a/lib/math.in.h +++ b/lib/math.in.h @@ -808,6 +808,31 @@ #endif +/* Return sqrt(x^2+y^2). */ +#if @GNULIB_HYPOTF@ +# if @REPLACE_HYPOTF@ +# if !(defined __cplusplus && defined GNULIB_NAMESPACE) +# undef hypotf +# define hypotf rpl_hypotf +# endif +_GL_FUNCDECL_RPL (hypotf, float, (float x, float y)); +_GL_CXXALIAS_RPL (hypotf, float, (float x, float y)); +# else +# if !@HAVE_HYPOTF@ +_GL_FUNCDECL_SYS (hypotf, float, (float x, float y)); +# endif +_GL_CXXALIAS_SYS (hypotf, float, (float x, float y)); +# endif +_GL_CXXALIASWARN (hypotf); +#elif defined GNULIB_POSIXCHECK +# undef hypotf +# if HAVE_RAW_DECL_HYPOTF +_GL_WARN_ON_USE (hypotf, "hypotf is unportable - " + "use gnulib module hypotf for portability"); +# endif +#endif + + /* Return x * 2^exp. */ #if @GNULIB_LDEXPF@ # if !@HAVE_LDEXPF@
new file mode 100644 --- /dev/null +++ b/m4/hypotf.m4 @@ -0,0 +1,83 @@ +# hypotf.m4 serial 1 +dnl Copyright (C) 2012 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_FUNC_HYPOTF], +[ + AC_REQUIRE([gl_MATH_H_DEFAULTS]) + AC_REQUIRE([gl_FUNC_HYPOT]) + + dnl Test whether hypotf() exists. Assume that hypotf(), if it exists, is + dnl defined in the same library as fmod(). + save_LIBS="$LIBS" + LIBS="$LIBS $HYPOT_LIBM" + AC_CHECK_FUNCS([hypotf]) + LIBS="$save_LIBS" + if test $ac_cv_func_hypotf = yes; then + HYPOTF_LIBM="$HYPOT_LIBM" + save_LIBS="$LIBS" + LIBS="$LIBS $HYPOTF_LIBM" + gl_FUNC_HYPOTF_WORKS + LIBS="$save_LIBS" + case "$gl_cv_func_hypotf_works" in + *yes) ;; + *) REPLACE_HYPOTF=1 ;; + esac + else + HAVE_HYPOTF=0 + fi + if test $HAVE_HYPOTF = 0 || test $REPLACE_HYPOTF = 1; then + dnl Find libraries needed to link lib/hypotf.c. + HYPOTF_LIBM="$HYPOT_LIBM" + fi + AC_SUBST([HYPOTF_LIBM]) +]) + +dnl Test whether hypotf() works. +dnl It returns wrong values on NetBSD 5.1/x86_64 and OpenBSD 4.9/x86. +AC_DEFUN([gl_FUNC_HYPOTF_WORKS], +[ + AC_REQUIRE([AC_PROG_CC]) + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles + AC_CACHE_CHECK([whether hypotf works], [gl_cv_func_hypotf_works], + [ + AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ +#include <float.h> +#include <math.h> +volatile float x; +volatile float y; +volatile float z; +int main () +{ + int result = 0; + /* This test fails on NetBSD 5.1. */ + { + x = FLT_MIN * 2.0f; + y = FLT_MIN * 3.0f; + z = hypotf (x, y); + if (!(z >= FLT_MIN * 2.0f && z <= FLT_MIN * 4.0f)) + result |= 1; + } + /* This test fails on OpenBSD 4.9. */ + { + x = FLT_MAX; + y = FLT_MAX * 0.5f; + z = hypotf (x, y); + if (!(z > 0 && z == z + z)) + result |= 2; + } + return result; +} +]])], + [gl_cv_func_hypotf_works=yes], + [gl_cv_func_hypotf_works=no], + [case "$host_os" in + netbsd* | openbsd*) gl_cv_func_hypotf_works="guessing no";; + *) gl_cv_func_hypotf_works="guessing yes";; + esac + ]) + ]) +])
--- a/m4/math_h.m4 +++ b/m4/math_h.m4 @@ -1,4 +1,4 @@ -# math_h.m4 serial 71 +# math_h.m4 serial 72 dnl Copyright (C) 2007-2012 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -42,7 +42,7 @@ [acosf acosl asinf asinl atanf atanl ceilf ceill copysign copysignf copysignl cosf cosl coshf expf expl fabsf fabsl floorf floorl fma fmaf fmal - fmod fmodf fmodl frexpf frexpl + fmod fmodf fmodl frexpf frexpl hypotf ldexpf ldexpl logb logf logl log10f log10l modf modff modfl powf remainder remainderf remainderl rint rintf rintl round roundf roundl sinf sinl sinhf sqrtf sqrtl @@ -92,6 +92,7 @@ GNULIB_FREXPF=0; AC_SUBST([GNULIB_FREXPF]) GNULIB_FREXP=0; AC_SUBST([GNULIB_FREXP]) GNULIB_FREXPL=0; AC_SUBST([GNULIB_FREXPL]) + GNULIB_HYPOTF=0; AC_SUBST([GNULIB_HYPOTF]) GNULIB_ISFINITE=0; AC_SUBST([GNULIB_ISFINITE]) GNULIB_ISINF=0; AC_SUBST([GNULIB_ISINF]) GNULIB_ISNAN=0; AC_SUBST([GNULIB_ISNAN]) @@ -154,6 +155,7 @@ HAVE_FMODF=1; AC_SUBST([HAVE_FMODF]) HAVE_FMODL=1; AC_SUBST([HAVE_FMODL]) HAVE_FREXPF=1; AC_SUBST([HAVE_FREXPF]) + HAVE_HYPOTF=1; AC_SUBST([HAVE_HYPOTF]) HAVE_ISNANF=1; AC_SUBST([HAVE_ISNANF]) HAVE_ISNAND=1; AC_SUBST([HAVE_ISNAND]) HAVE_ISNANL=1; AC_SUBST([HAVE_ISNANL]) @@ -220,6 +222,7 @@ REPLACE_FREXP=0; AC_SUBST([REPLACE_FREXP]) REPLACE_FREXPL=0; AC_SUBST([REPLACE_FREXPL]) REPLACE_HUGE_VAL=0; AC_SUBST([REPLACE_HUGE_VAL]) + REPLACE_HYPOTF=0; AC_SUBST([REPLACE_HYPOTF]) REPLACE_ISFINITE=0; AC_SUBST([REPLACE_ISFINITE]) REPLACE_ISINF=0; AC_SUBST([REPLACE_ISINF]) REPLACE_ISNAN=0; AC_SUBST([REPLACE_ISNAN])
new file mode 100644 --- /dev/null +++ b/modules/hypotf @@ -0,0 +1,32 @@ +Description: +hypotf() function: length of a vector in the plane. + +Files: +lib/hypotf.c +m4/hypotf.m4 +m4/mathfunc.m4 + +Depends-on: +math +hypot [test $HAVE_HYPOTF = 0 || test $REPLACE_HYPOTF = 1] + +configure.ac: +gl_FUNC_HYPOTF +if test $HAVE_HYPOTF = 0 || test $REPLACE_HYPOTF = 1; then + AC_LIBOBJ([hypotf]) +fi +gl_MATH_MODULE_INDICATOR([hypotf]) + +Makefile.am: + +Include: +<math.h> + +Link: +$(HYPOTF_LIBM) + +License: +LGPL + +Maintainer: +Bruno Haible
--- a/modules/math +++ b/modules/math @@ -60,6 +60,7 @@ -e 's/@''GNULIB_FREXPF''@/$(GNULIB_FREXPF)/g' \ -e 's/@''GNULIB_FREXP''@/$(GNULIB_FREXP)/g' \ -e 's/@''GNULIB_FREXPL''@/$(GNULIB_FREXPL)/g' \ + -e 's/@''GNULIB_HYPOTF''@/$(GNULIB_HYPOTF)/g' \ -e 's/@''GNULIB_ISFINITE''@/$(GNULIB_ISFINITE)/g' \ -e 's/@''GNULIB_ISINF''@/$(GNULIB_ISINF)/g' \ -e 's/@''GNULIB_ISNAN''@/$(GNULIB_ISNAN)/g' \ @@ -122,6 +123,7 @@ -e 's|@''HAVE_FMODF''@|$(HAVE_FMODF)|g' \ -e 's|@''HAVE_FMODL''@|$(HAVE_FMODL)|g' \ -e 's|@''HAVE_FREXPF''@|$(HAVE_FREXPF)|g' \ + -e 's|@''HAVE_HYPOTF''@|$(HAVE_HYPOTF)|g' \ -e 's|@''HAVE_ISNANF''@|$(HAVE_ISNANF)|g' \ -e 's|@''HAVE_ISNAND''@|$(HAVE_ISNAND)|g' \ -e 's|@''HAVE_ISNANL''@|$(HAVE_ISNANL)|g' \ @@ -189,6 +191,7 @@ -e 's|@''REPLACE_FREXP''@|$(REPLACE_FREXP)|g' \ -e 's|@''REPLACE_FREXPL''@|$(REPLACE_FREXPL)|g' \ -e 's|@''REPLACE_HUGE_VAL''@|$(REPLACE_HUGE_VAL)|g' \ + -e 's|@''REPLACE_HYPOTF''@|$(REPLACE_HYPOTF)|g' \ -e 's|@''REPLACE_ISFINITE''@|$(REPLACE_ISFINITE)|g' \ -e 's|@''REPLACE_ISINF''@|$(REPLACE_ISINF)|g' \ -e 's|@''REPLACE_ISNAN''@|$(REPLACE_ISNAN)|g' \
--- a/tests/test-math-c++.cc +++ b/tests/test-math-c++.cc @@ -155,6 +155,9 @@ SIGNATURE_CHECK (GNULIB_NAMESPACE::frexpl, long double, (long double, int *)); #endif +#if GNULIB_TEST_HYPOTF +SIGNATURE_CHECK (GNULIB_NAMESPACE::hypotf, float, (float, float)); +#endif //SIGNATURE_CHECK (GNULIB_NAMESPACE::hypot, double, (double, double)); //SIGNATURE_CHECK (GNULIB_NAMESPACE::j0, double, (double));