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55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/*
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libspecbleach - A spectral processing library
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Copyright 2022 Luciano Dato <lucianodato@gmail.com>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "general_utils.h"
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#include <float.h>
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#include <math.h>
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#include <stdlib.h>
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float sanitize_denormal(float value) {
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if (!isnormal(value)) {
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value = 0.F;
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}
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return value;
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}
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float from_db_to_coefficient(const float value_db) {
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return expf(value_db / 20.F * logf(10.F));
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}
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float remap_percentage_log_like_unity(const float value) {
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return 1.F - expf(-3.F * (value));
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}
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int get_next_divisible_two(int number) {
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int q = number / 2;
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int n1 = 2 * q;
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int n2 = (number * 2) > 0 ? (2 * (q + 1)) : (2 * (q - 1));
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if (abs(number - n1) < abs(number - n2)) {
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return n1;
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}
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return n2;
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}
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int get_next_power_two(int number) {
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return (int)roundf(powf(2.F, ceilf(log2f((float)number))));
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}
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