emacs/count-leading-zeros.c at 556c23cd1765b8069d24a7b7038ab2712636ce81 - emacs - My personal repos.

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Paul Eggert 74f87fd111 logb now works correctly on large integers

* admin/merge-gnulib (GNULIB_MODULES): Add count-leading-zeros.
* etc/NEWS: Document the change.
* lib/count-leading-zeros.c, lib/count-leading-zeros.h:
* m4/count-leading-zeros.m4: New files, copied from Gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* src/floatfns.c: Include count-leading-zeros.h.
(Flogb): Do not convert fixnum to float before taking the log,
as the rounding error can cause the answer to be off by 1.
* src/lisp.h (EMACS_UINT_WIDTH): New constant.
* test/src/floatfns-tests.el (logb-extreme-fixnum): New test.

2017-03-03 09:19:08 -08:00

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	`#include <config.h>`
	`#define COUNT_LEADING_ZEROS_INLINE _GL_EXTERN_INLINE`
	`#include "count-leading-zeros.h"`