WSJT-X/libm65/qracodes/normrnd.h
2018-10-19 15:55:29 -04:00

52 lines
1.7 KiB
C

// normrnd.h
// Functions to generate gaussian distributed numbers
//
// (c) 2016 - Nico Palermo, IV3NWV - Microtelecom Srl, Italy
// ------------------------------------------------------------------------------
// This file is part of the qracodes project, a Forward Error Control
// encoding/decoding package based on Q-ary RA (Repeat and Accumulate) LDPC codes.
//
// qracodes 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 3 of the License, or
// (at your option) any later version.
// qracodes 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 qracodes source distribution.
// If not, see <http://www.gnu.org/licenses/>.
#ifndef _normrnd_h_
#define _normrnd_h_
#define _CRT_RAND_S
#include <stdlib.h>
#define _USE_MATH_DEFINES
#include <math.h>
#define M_2PI (2.0f*(float)M_PI)
#ifdef __cplusplus
extern "C" {
#endif
void normrnd_s(float *dst, int nitems, float mean, float stdev);
// generate a random array of numbers with a gaussian distribution of given mean and stdev
// use MS rand_s(...) function
/* not used
void normrnd(float *dst, int nitems, float mean, float stdev);
// generate a random array of numbers with a gaussian distribution of given mean and stdev
// use MS rand() function
*/
#ifdef __cplusplus
}
#endif
#endif // _normrnd_h_