[FFmpeg-devel] [PATCHv3 1/3] avutil/tablegen: add tablegen compatibility hacks

[Clément Bœsch]

On Thu, Nov 26, 2015 at 11:58:10AM -0500, Ganesh Ajjanagadde wrote:
> Reviewed-by: Ronald S. Bultje <rsbultje at gmail.com>
> Signed-off-by: Ganesh Ajjanagadde <gajjanagadde at gmail.com>
> ---
>  libavutil/tablegen.h | 33 +++++++++++++++++++++++++++++++++
>  1 file changed, 33 insertions(+)
>  create mode 100644 libavutil/tablegen.h
> 
> diff --git a/libavutil/tablegen.h b/libavutil/tablegen.h
> new file mode 100644
> index 0000000..01c8eea
> --- /dev/null
> +++ b/libavutil/tablegen.h
> @@ -0,0 +1,33 @@
> +/*
> + * This file is part of FFmpeg.
> + *
> + * FFmpeg is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * FFmpeg is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> + * Lesser General Public License for more details.
> + *
> + * You should have received a copy of the GNU Lesser General Public
> + * License along with FFmpeg; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
> + */
> +
> +/**
> + * @file
> + * Compatibility libm for table generation files
> + */
> +
> +#ifndef AVUTIL_TABLEGEN_H
> +#define AVUTIL_TABLEGEN_H
> +
> +// we lack some functions on all host platforms, and we don't care about
> +// performance as it's performed at build time
> +#define cbrt(x)   pow(x, 1.0 / 3)

> +#define llrint(x) floor((x) + 0.5)
> +#define lrint(x)  floor((x) + 0.5)
> +

does it work for x < 0?

-- 
Clément B.
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