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/*
* Copyright (C) 2020 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2020 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-dsp-lib
* Created on: 31 мар. 2020 г.
*
* lsp-dsp-lib 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 3 of the License, or
* any later version.
*
* lsp-dsp-lib 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 lsp-dsp-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef PRIVATE_DSP_ARCH_GENERIC_FLOAT_H_
#define PRIVATE_DSP_ARCH_GENERIC_FLOAT_H_
#ifndef PRIVATE_DSP_ARCH_GENERIC_IMPL
#error "This header should not be included directly"
#endif /* PRIVATE_DSP_ARCH_GENERIC_IMPL */
namespace lsp
{
namespace generic
{
void copy_saturated(float *dst, const float *src, size_t count)
{
while (count--)
{
float v = *(src++);
if (isnan(v))
v = LSP_DSP_FLOAT_SAT_P_NAN;
else if (isinf(v))
v = (v < 0.0f) ? LSP_DSP_FLOAT_SAT_N_INF : LSP_DSP_FLOAT_SAT_P_INF;
*(dst++) = v;
}
}
void saturate(float *dst, size_t count)
{
while (count--)
{
float v = *dst;
if (isnan(v))
*(dst++) = LSP_DSP_FLOAT_SAT_P_NAN;
else if (isinf(v))
*(dst++) = (v < 0.0f) ? LSP_DSP_FLOAT_SAT_N_INF : LSP_DSP_FLOAT_SAT_P_INF;
else
dst++;
}
}
void limit_saturate1(float *dst, size_t count)
{
while (count--)
{
float v = *dst;
if (isnan(v))
v = LSP_DSP_FLOAT_SAT_P_NAN;
else if (isinf(v))
v = (v < 0.0f) ? -1.0f : 1.0f;
else if (v > 1.0f)
v = 1.0f;
else if (v < -1.0f)
v = -1.0f;
*(dst++) = v;
}
}
void limit_saturate2(float *dst, const float *src, size_t count)
{
while (count--)
{
float v = *(src++);
if (isnan(v))
v = LSP_DSP_FLOAT_SAT_P_NAN;
else if (isinf(v))
v = (v < 0.0f) ? -1.0f : 1.0f;
else if (v > 1.0f)
v = 1.0f;
else if (v < -1.0f)
v = -1.0f;
*(dst++) = v;
}
}
void limit1(float *dst, float min, float max, size_t count)
{
while (count--)
{
float v = *dst;
if (isnan(v))
v = min;
else if (isinf(v))
v = (v < 0.0f) ? min : max;
else if (v > max)
v = max;
else if (v < min)
v = min;
*(dst++) = v;
}
}
void limit2(float *dst, const float *src, float min, float max, size_t count)
{
while (count--)
{
float v = *(src++);
if (isnan(v))
v = min;
else if (isinf(v))
v = (v < 0.0f) ? min : max;
else if (v > max)
v = max;
else if (v < min)
v = min;
*(dst++) = v;
}
}
void sanitize1(float *dst, size_t count)
{
uint32_t *dptr = reinterpret_cast<uint32_t *>(dst);
for (size_t i=0; i<count; ++i)
{
uint32_t v = dptr[i];
uint32_t a = v & 0x7fffffff; // Absolute value
uint32_t s = v & 0x80000000; // Sign
dptr[i] = ((a > 0x007fffff) && (a <= 0x7f7fffff)) ? v : s;
}
}
void sanitize2(float *dst, const float *src, size_t count)
{
uint32_t *dptr = reinterpret_cast<uint32_t *>(dst);
const uint32_t *sptr = reinterpret_cast<const uint32_t *>(src);
for (size_t i=0; i<count; ++i)
{
uint32_t v = sptr[i];
uint32_t a = v & 0x7fffffff; // Absolute value
uint32_t s = v & 0x80000000; // Sign
dptr[i] = ((a > 0x007fffff) && (a <= 0x7f7fffff)) ? v : s;
}
}
}
}
#endif /* PRIVATE_DSP_ARCH_GENERIC_FLOAT_H_ */
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