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a918da4d61
Libvirt wants to use ffs() to avoid dragging in -lm for log2(). * modules/ffs: New file. * m4/ffs.m4: Likewise. * lib/ffs.c: Likewise. * m4/strings_h.m4 (gl_HEADER_STRINGS_H_DEFAULTS): Add default. * modules/strings (Makefile.am): Substitute witness. (Depends-on): Add c++defs. * lib/strings.in.h (ffs): Declare. * modules/ffs-tests: New test file. * tests/test-ffs.c: Test new module. * MODULES.html.sh (Integer arithmetic functions): Mention it. * doc/posix-functions/ffs.texi (ffs): Likewise. Signed-off-by: Eric Blake <eblake@redhat.com>
28 lines
302 B
Plaintext
28 lines
302 B
Plaintext
Description:
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Finds the index of the least-significant set bit.
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Files:
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lib/ffs.c
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m4/ffs.m4
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Depends-on:
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strings
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configure.ac:
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gl_FUNC_FFS
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if test $HAVE_FFS = 0; then
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AC_LIBOBJ([ffs])
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fi
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gl_STRINGS_MODULE_INDICATOR([ffs])
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Makefile.am:
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Include:
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<strings.h>
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License:
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LGPLv2+
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Maintainer:
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Eric Blake
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