+2025-12-19 Bruno Haible <bruno@clisp.org>
+
+ signbit-no-c++: New module.
+ * modules/signbit-no-c++: New file, based on modules/signbit.
+ * modules/signbit: Essentially an alias of signbit-no-c++ now.
+ * modules/signbit-no-c++-tests: Renamed from modules/signbit-tests.
+ * lib/math.in.h (signbit): Test also GNULIB_SIGNBIT_NO_CXX.
+ * m4/math_h.m4 (gl_MATH_H_REQUIRE_DEFAULTS): Initialize
+ GNULIB_SIGNBIT_NO_CXX.
+ * modules/math-h (Makefile.am): Substitute GNULIB_SIGNBIT_NO_CXX.
+ * modules/copysign (Depends-on): Add signbit-no-c++. Remove signbit.
+ * modules/copysignf (Depends-on): Likewise.
+ * modules/copysignl (Depends-on): Likewise.
+ * modules/fabsl (Depends-on): Likewise.
+ * modules/fmod (Depends-on): Likewise.
+ * modules/fmodl (Depends-on): Likewise.
+ * modules/mixin/printf-posix (Depends-on): Likewise.
+ * modules/remainder (Depends-on): Likewise.
+ * modules/remainderf (Depends-on): Likewise.
+ * modules/remainderl (Depends-on): Likewise.
+ * modules/signed-nan (Depends-on): Likewise.
+ * modules/totalorder (Depends-on): Likewise.
+ * modules/totalorderf (Depends-on): Likewise.
+ * modules/totalorderl (Depends-on): Likewise.
+ * modules/totalordermag (Depends-on): Likewise.
+ * modules/totalordermagf (Depends-on): Likewise.
+ * modules/totalordermagl (Depends-on): Likewise.
+ * modules/c-strtod-tests (Depends-on): Likewise.
+ * modules/c-strtof-tests (Depends-on): Likewise.
+ * modules/c-strtold-tests (Depends-on): Likewise.
+ * modules/cbrt-ieee-tests (Depends-on): Likewise.
+ * modules/cbrtf-ieee-tests (Depends-on): Likewise.
+ * modules/cbrtl-ieee-tests (Depends-on): Likewise.
+ * modules/ceil-ieee-tests (Depends-on): Likewise.
+ * modules/ceilf-ieee-tests (Depends-on): Likewise.
+ * modules/ceill-ieee-tests (Depends-on): Likewise.
+ * modules/exp-ieee-tests (Depends-on): Likewise.
+ * modules/exp2-ieee-tests (Depends-on): Likewise.
+ * modules/exp2f-ieee-tests (Depends-on): Likewise.
+ * modules/exp2l-ieee-tests (Depends-on): Likewise.
+ * modules/expf-ieee-tests (Depends-on): Likewise.
+ * modules/expl-ieee-tests (Depends-on): Likewise.
+ * modules/expm1-ieee-tests (Depends-on): Likewise.
+ * modules/expm1f-ieee-tests (Depends-on): Likewise.
+ * modules/expm1l-ieee-tests (Depends-on): Likewise.
+ * modules/fabs-ieee-tests (Depends-on): Likewise.
+ * modules/fabs-tests (Depends-on): Likewise.
+ * modules/fabsf-ieee-tests (Depends-on): Likewise.
+ * modules/fabsf-tests (Depends-on): Likewise.
+ * modules/fabsl-ieee-tests (Depends-on): Likewise.
+ * modules/fabsl-tests (Depends-on): Likewise.
+ * modules/floor-ieee-tests (Depends-on): Likewise.
+ * modules/floorf-ieee-tests (Depends-on): Likewise.
+ * modules/floorl-ieee-tests (Depends-on): Likewise.
+ * modules/fmod-ieee-tests (Depends-on): Likewise.
+ * modules/fmodf-ieee-tests (Depends-on): Likewise.
+ * modules/fmodl-ieee-tests (Depends-on): Likewise.
+ * modules/frexp-ieee-tests (Depends-on): Likewise.
+ * modules/frexp-nolibm-tests (Depends-on): Likewise.
+ * modules/frexp-tests (Depends-on): Likewise.
+ * modules/frexpf-ieee-tests (Depends-on): Likewise.
+ * modules/frexpf-tests (Depends-on): Likewise.
+ * modules/frexpl-ieee-tests (Depends-on): Likewise.
+ * modules/frexpl-nolibm-tests (Depends-on): Likewise.
+ * modules/frexpl-tests (Depends-on): Likewise.
+ * modules/hypot-ieee-tests (Depends-on): Likewise.
+ * modules/hypotf-ieee-tests (Depends-on): Likewise.
+ * modules/hypotl-ieee-tests (Depends-on): Likewise.
+ * modules/ldexp-ieee-tests (Depends-on): Likewise.
+ * modules/ldexp-tests (Depends-on): Likewise.
+ * modules/ldexpf-ieee-tests (Depends-on): Likewise.
+ * modules/ldexpf-tests (Depends-on): Likewise.
+ * modules/ldexpl-ieee-tests (Depends-on): Likewise.
+ * modules/ldexpl-tests (Depends-on): Likewise.
+ * modules/log-ieee-tests (Depends-on): Likewise.
+ * modules/log10-ieee-tests (Depends-on): Likewise.
+ * modules/log10f-ieee-tests (Depends-on): Likewise.
+ * modules/log10l-ieee-tests (Depends-on): Likewise.
+ * modules/log1p-ieee-tests (Depends-on): Likewise.
+ * modules/log1pf-ieee-tests (Depends-on): Likewise.
+ * modules/log1pl-ieee-tests (Depends-on): Likewise.
+ * modules/log2-ieee-tests (Depends-on): Likewise.
+ * modules/log2f-ieee-tests (Depends-on): Likewise.
+ * modules/log2l-ieee-tests (Depends-on): Likewise.
+ * modules/logb-ieee-tests (Depends-on): Likewise.
+ * modules/logbf-ieee-tests (Depends-on): Likewise.
+ * modules/logbl-ieee-tests (Depends-on): Likewise.
+ * modules/logf-ieee-tests (Depends-on): Likewise.
+ * modules/logl-ieee-tests (Depends-on): Likewise.
+ * modules/modf-ieee-tests (Depends-on): Likewise.
+ * modules/modff-ieee-tests (Depends-on): Likewise.
+ * modules/modfl-ieee-tests (Depends-on): Likewise.
+ * modules/remainder-ieee-tests (Depends-on): Likewise.
+ * modules/remainderf-ieee-tests (Depends-on): Likewise.
+ * modules/remainderl-ieee-tests (Depends-on): Likewise.
+ * modules/rint-ieee-tests (Depends-on): Likewise.
+ * modules/rintf-ieee-tests (Depends-on): Likewise.
+ * modules/rintl-ieee-tests (Depends-on): Likewise.
+ * modules/round-ieee-tests (Depends-on): Likewise.
+ * modules/roundf-ieee-tests (Depends-on): Likewise.
+ * modules/roundl-ieee-tests (Depends-on): Likewise.
+ * modules/sqrt-ieee-tests (Depends-on): Likewise.
+ * modules/sqrtf-ieee-tests (Depends-on): Likewise.
+ * modules/sqrtl-ieee-tests (Depends-on): Likewise.
+ * modules/strtod-tests (Depends-on): Likewise.
+ * modules/strtof-tests (Depends-on): Likewise.
+ * modules/strtold-tests (Depends-on): Likewise.
+ * modules/trunc-ieee-tests (Depends-on): Likewise.
+ * modules/truncf-ieee-tests (Depends-on): Likewise.
+ * modules/truncl-ieee-tests (Depends-on): Likewise.
+ * modules/xstrtod-tests (Depends-on): Likewise.
+ * modules/xstrtold-tests (Depends-on): Likewise.
+
2025-12-19 Bruno Haible <bruno@clisp.org>
isnan-no-c++: New module.