cbrtl-ieee: Work around test failure on IRIX 6.5. * m4/cbrtl-ieee.m4: New file. * m4/cbrtl.m4 (gl_FUNC_CBRTL): If gl_FUNC_CBRTL_IEEE is present, test whether cbrtl works with a minus zero argument. Replace it if not. * lib/math.in.h (cbrtl): Override if REPLACE_CBRTL is 1. * m4/math_h.m4 (gl_MATH_H_DEFAULTS): Initialize REPLACE_CBRTL. * modules/math (Makefile.am): Substitute REPLACE_CBRTL. * modules/cbrtl (configure.ac): Consider REPLACE_CBRTL. (Depends-on): Update conditions. * modules/cbrtl-ieee (Files): Add m4/cbrtl-ieee.m4, m4/minus-zero.m4, m4/signbit.m4. (configure.ac): Invoke gl_FUNC_CBRTL_IEEE. * lib/cbrtl.c (cbrtl) [IRIX]: Avoid an unnecessary addition. * doc/posix-functions/cbrtl.texi: Mention the cbrtl-ieee module.

Description:
cbrtl() function according to ISO C 99 with IEC 60559.

Files:
m4/cbrtl-ieee.m4
m4/minus-zero.m4
m4/signbit.m4

Depends-on:
cbrtl
fpieee

configure.ac:
gl_FUNC_CBRTL_IEEE

Makefile.am:

Include:
<math.h>

Link:
$(CBRTL_LIBM)

License:
LGPL

Maintainer:
Bruno Haible