view modules/ilogbl @ 38919:b8611026be0c

ilogbl: Ensure replacement on Haiku. * m4/ilogbl.m4 (gl_FUNC_ILOGBL): Invoke gl_FUNC_ILOGBL_WORKS and set REPLACE_ILOGBL if ilogbl does not work. (gl_FUNC_ILOGBL_WORKS): New macro. * lib/math.in.h (ilogbl): Replace if REPLACE_ILOGBL is 1. * m4/math_h.m4 (gl_MATH_H_DEFAULTS): Initialize REPLACE_ILOGBL. * modules/math (Makefile.am): Substitute REPLACE_ILOGBL. * modules/ilogbl (Depends-on, configure.ac): Consider REPLACE_ILOGBL. * doc/posix-functions/ilogbl.texi: Mention the Haiku problem.
author Bruno Haible <bruno@clisp.org>
date Sun, 29 Oct 2017 12:57:35 +0100
parents 30a315a9bfa4
children
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Description:
ilogbl() function: get exponent as integer.

Files:
lib/ilogbl.c
lib/ilogb.c
m4/ilogbl.m4
m4/mathfunc.m4

Depends-on:
math
extensions
ilogb           [{ test $HAVE_ILOGBL = 0 || test $REPLACE_ILOGBL = 1; } && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1]
isfinite        [{ test $HAVE_ILOGBL = 0 || test $REPLACE_ILOGBL = 1; } && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]
frexpl          [{ test $HAVE_ILOGBL = 0 || test $REPLACE_ILOGBL = 1; } && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]
isnanl          [{ test $HAVE_ILOGBL = 0 || test $REPLACE_ILOGBL = 1; } && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]

configure.ac:
gl_FUNC_ILOGBL
if test $HAVE_ILOGBL = 0 || test $REPLACE_ILOGBL = 1; then
  AC_LIBOBJ([ilogbl])
fi
gl_MATH_MODULE_INDICATOR([ilogbl])

Makefile.am:

Include:
<math.h>

Link:
$(ILOGBL_LIBM)

License:
LGPL

Maintainer:
all