view modules/log2f @ 40215:88b18d82fa61

crypto/des: Fix undefined behaviour. * lib/des.c (READ_64BIT_DATA): Cast bytes to 'unsigned int', to avoid shift operations on 'int'.
author Bruno Haible <bruno@clisp.org>
date Sat, 09 Mar 2019 22:21:25 +0100
parents 1f14c6dd175d
children
line wrap: on
line source

Description:
log2f() function: base 2 logarithm.

Files:
lib/log2f.c
m4/log2f.m4

Depends-on:
math
extensions
log2            [test $HAVE_LOG2F = 0 || test $REPLACE_LOG2F = 1]
isnanf          [test $HAVE_LOG2F = 0 || test $REPLACE_LOG2F = 1]
frexpf          [test $HAVE_LOG2F = 0 || test $REPLACE_LOG2F = 1]
logf            [test $HAVE_LOG2F = 0 || test $REPLACE_LOG2F = 1]

configure.ac:
gl_FUNC_LOG2F
if test $HAVE_LOG2F = 0 || test $REPLACE_LOG2F = 1; then
  AC_LIBOBJ([log2f])
fi
gl_MATH_MODULE_INDICATOR([log2f])

Makefile.am:

Include:
<math.h>

Link:
$(LOG2F_LIBM)

License:
LGPL

Maintainer:
all