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// ------------------------------------------------------------------------
// sample-ops_impl.h: Sample value defaults and constants.
// Copyright (C) 2004 Kai Vehmanen
// Copyright (C) 2004 Steve Harris, Tim Blechmann
//
// Attributes:
// eca-style-version: 2
// public-libecasound-API: no
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// ------------------------------------------------------------------------
#ifndef INCLUDED_SAMPLE_OPS_IMPL_H
#define INCLUDED_SAMPLE_OPS_IMPL_H
#include <kvu_inttypes.h>
/* 32 bit "pointer cast" union */
typedef union {
float f;
int32_t i;
} ls_pcast32;
/**
* Truncates small float values 'f' to zero to avoid
* denormal floats in processing.
*
* Taken from swh-plugins 0.4.11 package (ladspa-util.h).
*
* @author Steve Harris
* @author Tim Blechmann
*/
static inline float ecaops_flush_to_zero(float f)
{
ls_pcast32 v;
v.f = f;
// original: return (v.i & 0x7f800000) == 0 ? 0.0f : f;
// version from Tim Blechmann
return (v.i & 0x7f800000) < 0x08000000 ? 0.0f : f;
}
#endif
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