view modules/ldexpl @ 40214:452ab00796c7

Fix undefined behaviour. * lib/bitrotate.h (rotl16, rotr16, rotl8, rotr8): Case x to 'unsigned int', to avoid shift operations on 'int'. * lib/xmemdup0.c (xmemdup0): Don't invoke memcpy with a zero size. * tests/test-count-leading-zeros.c (main): Use a random number that has as many bits as TYPE, not only 2*15 or 2*31 bits. * tests/test-count-trailing-zeros.c (main): Likewise. * tests/test-count-one-bits.c (main): Likewise. * tests/test-memmem.c: Don't include "null-ptr.h". (main): Use zerosize_ptr() instead of null_ptr(). * modules/memmem-tests (Files): Remove tests/null-ptr.h.
author Bruno Haible <bruno@clisp.org>
date Sat, 09 Mar 2019 20:32:25 +0100
parents 1f14c6dd175d
children
line wrap: on
line source

Description:
ldexpl() function: multiply a 'long double' by a power of 2.

Files:
lib/ldexpl.c
m4/ldexpl.m4

Depends-on:
math
extensions
ldexp           [{ test $HAVE_DECL_LDEXPL = 0 || test $gl_func_ldexpl = no; } && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1]
isnanl          [{ test $HAVE_DECL_LDEXPL = 0 || test $gl_func_ldexpl = no; } && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]
fpucw           [{ test $HAVE_DECL_LDEXPL = 0 || test $gl_func_ldexpl = no; } && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]

configure.ac:
gl_FUNC_LDEXPL
if test $HAVE_DECL_LDEXPL = 0 || test $gl_func_ldexpl = no; then
  AC_LIBOBJ([ldexpl])
fi
gl_MATH_MODULE_INDICATOR([ldexpl])

Makefile.am:

Include:
<math.h>

Link:
$(LDEXPL_LIBM)

License:
LGPL

Maintainer:
Paolo Bonzini