/usr/include/sc_functions.h is in libp4est-dev 1.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 | /*
This file is part of the SC Library.
The SC Library provides support for parallel scientific applications.
Copyright (C) 2010 The University of Texas System
The SC Library 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.
The SC Library 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 the SC Library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
#ifndef SC_FUNCTIONS_H
#define SC_FUNCTIONS_H
#include <sc.h>
SC_EXTERN_C_BEGIN;
typedef double (*sc_function1_t) (double x, void *data);
typedef double (*sc_function3_t) (double x, double y, double z,
void *data);
/*
* this structure is used as data element for the meta functions.
* for _sum and _product:
* f1 needs to be a valid function.
* f2 can be a function, then it is used,
* or NULL, in which case parameter2 is used.
* for _tensor: f1, f2, f3 need to be valid functions.
*/
typedef struct sc_function3_meta
{
sc_function3_t f1;
sc_function3_t f2;
double parameter2;
sc_function3_t f3;
void *data;
}
sc_function3_meta_t;
/* Evaluate the inverse function with regula falsi: x = func^{-1}(y) */
double sc_function1_invert (sc_function1_t func, void *data,
double x_low, double x_high,
double y, double rtol);
/** Seed the random number generator differently on each process.
* Seeds each process with seed and mpirank from sc_MPI_COMM_WORLD.
* ( mpirank + seed * large_prime )
*
* \param [in] seed Seed for random number generator, calls srand ().
*/
void sc_srand (unsigned int seed);
/** Seed the random number generator differently on each process.
* Seeds each process with time and mpirank from sc_MPI_COMM_WORLD.
* ( time + mpirank * small_prime )
*/
void sc_srand_time ();
/** Sample a uniform value from [0,1) via rand ().
*
* \return randum number from uniform distribution on [0,1)
*/
double sc_rand_uniform (void);
/** Sample a (gaussian) standard normal distribution.
* Implements polar form of the Box Muller transform based on rand ().
*
* \return random number from a univariate standard normal distribution
*/
double sc_rand_normal (void);
/* Some basic 3D functions */
double sc_zero3 (double x, double y, double z, void *data);
double sc_one3 (double x, double y, double z, void *data);
double sc_two3 (double x, double y, double z, void *data);
double sc_ten3 (double x, double y, double z, void *data);
/**
* \param data needs to be *double with the value of the constant.
*/
double sc_constant3 (double x, double y, double z, void *data);
double sc_x3 (double x, double y, double z, void *data);
double sc_y3 (double x, double y, double z, void *data);
double sc_z3 (double x, double y, double z, void *data);
double sc_sum3 (double x, double y, double z, void *data);
double sc_product3 (double x, double y, double z, void *data);
double sc_tensor3 (double x, double y, double z, void *data);
SC_EXTERN_C_END;
#endif /* !SC_FUNCTIONS_H */
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