libsc
1.6.0
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00001 /* 00002 This file is part of the SC Library. 00003 The SC Library provides support for parallel scientific applications. 00004 00005 Copyright (C) 2010 The University of Texas System 00006 00007 The SC Library is free software; you can redistribute it and/or 00008 modify it under the terms of the GNU Lesser General Public 00009 License as published by the Free Software Foundation; either 00010 version 2.1 of the License, or (at your option) any later version. 00011 00012 The SC Library is distributed in the hope that it will be useful, 00013 but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 Lesser General Public License for more details. 00016 00017 You should have received a copy of the GNU Lesser General Public 00018 License along with the SC Library; if not, write to the Free Software 00019 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 00020 02110-1301, USA. 00021 */ 00022 00023 #ifndef SC_FUNCTIONS_H 00024 #define SC_FUNCTIONS_H 00025 00026 #include <sc.h> 00027 00028 SC_EXTERN_C_BEGIN; 00029 00030 typedef double (*sc_function1_t) (double x, void *data); 00031 00032 typedef double (*sc_function3_t) (double x, double y, double z, 00033 void *data); 00034 00035 /* 00036 * this structure is used as data element for the meta functions. 00037 * for _sum and _product: 00038 * f1 needs to be a valid function. 00039 * f2 can be a function, then it is used, 00040 * or NULL, in which case parameter2 is used. 00041 * for _tensor: f1, f2, f3 need to be valid functions. 00042 */ 00043 typedef struct sc_function3_meta 00044 { 00045 sc_function3_t f1; 00046 sc_function3_t f2; 00047 double parameter2; 00048 sc_function3_t f3; 00049 void *data; 00050 } 00051 sc_function3_meta_t; 00052 00053 /* Evaluate the inverse function with regula falsi: x = func^{-1}(y) */ 00054 double sc_function1_invert (sc_function1_t func, void *data, 00055 double x_low, double x_high, 00056 double y, double rtol); 00057 00064 void sc_srand (unsigned int seed); 00065 00070 void sc_srand_time (); 00071 00076 double sc_rand_uniform (void); 00077 00083 double sc_rand_normal (void); 00084 00085 /* Some basic 3D functions */ 00086 double sc_zero3 (double x, double y, double z, void *data); 00087 double sc_one3 (double x, double y, double z, void *data); 00088 double sc_two3 (double x, double y, double z, void *data); 00089 double sc_ten3 (double x, double y, double z, void *data); 00090 00094 double sc_constant3 (double x, double y, double z, void *data); 00095 00096 double sc_x3 (double x, double y, double z, void *data); 00097 double sc_y3 (double x, double y, double z, void *data); 00098 double sc_z3 (double x, double y, double z, void *data); 00099 00100 double sc_sum3 (double x, double y, double z, void *data); 00101 double sc_product3 (double x, double y, double z, void *data); 00102 double sc_tensor3 (double x, double y, double z, void *data); 00103 00104 SC_EXTERN_C_END; 00105 00106 #endif /* !SC_FUNCTIONS_H */