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authormattip <matti.picus@gmail.com>2019-04-10 00:50:42 +0300
committermattip <matti.picus@gmail.com>2019-05-20 18:45:27 +0300
commitc53b2eb729bae1f248a2654dfcfa4a3dd3e2902b (patch)
treeeed1d982201dc892984feaca355565217069eb20 /numpy/random/mtrand/initarray.c
parent7e8e19f9a3b452fdbd992568348b393c31fba005 (diff)
downloadnumpy-c53b2eb729bae1f248a2654dfcfa4a3dd3e2902b.tar.gz
BENCH: convert bencmarks to asv format
remove files that were part of the origal repo rework randomgen docs to integrate with numpy and fix some links remove convenience functions, require explicit call to gen.brng move code out of numpy.random.randomgen into numpy.random
Diffstat (limited to 'numpy/random/mtrand/initarray.c')
-rw-r--r--numpy/random/mtrand/initarray.c151
1 files changed, 0 insertions, 151 deletions
diff --git a/numpy/random/mtrand/initarray.c b/numpy/random/mtrand/initarray.c
deleted file mode 100644
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--- a/numpy/random/mtrand/initarray.c
+++ /dev/null
@@ -1,151 +0,0 @@
-/*
- * These function have been adapted from Python 2.4.1's _randommodule.c
- *
- * The following changes have been made to it in 2005 by Robert Kern:
- *
- * * init_by_array has been declared extern, has a void return, and uses the
- * rk_state structure to hold its data.
- *
- * The original file has the following verbatim comments:
- *
- * ------------------------------------------------------------------
- * The code in this module was based on a download from:
- * http://www.math.keio.ac.jp/~matumoto/MT2002/emt19937ar.html
- *
- * It was modified in 2002 by Raymond Hettinger as follows:
- *
- * * the principal computational lines untouched except for tabbing.
- *
- * * renamed genrand_res53() to random_random() and wrapped
- * in python calling/return code.
- *
- * * genrand_int32() and the helper functions, init_genrand()
- * and init_by_array(), were declared static, wrapped in
- * Python calling/return code. also, their global data
- * references were replaced with structure references.
- *
- * * unused functions from the original were deleted.
- * new, original C python code was added to implement the
- * Random() interface.
- *
- * The following are the verbatim comments from the original code:
- *
- * A C-program for MT19937, with initialization improved 2002/1/26.
- * Coded by Takuji Nishimura and Makoto Matsumoto.
- *
- * Before using, initialize the state by using init_genrand(seed)
- * or init_by_array(init_key, key_length).
- *
- * Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * 3. The names of its contributors may not be used to endorse or promote
- * products derived from this software without specific prior written
- * permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *
- * Any feedback is very welcome.
- * http://www.math.keio.ac.jp/matumoto/emt.html
- * email: matumoto@math.keio.ac.jp
- */
-
-#include "initarray.h"
-
-static void
-init_genrand(rk_state *self, unsigned long s);
-
-/* initializes mt[RK_STATE_LEN] with a seed */
-static void
-init_genrand(rk_state *self, unsigned long s)
-{
- int mti;
- unsigned long *mt = self->key;
-
- mt[0] = s & 0xffffffffUL;
- for (mti = 1; mti < RK_STATE_LEN; mti++) {
- /*
- * See Knuth TAOCP Vol2. 3rd Ed. P.106 for multiplier.
- * In the previous versions, MSBs of the seed affect
- * only MSBs of the array mt[].
- * 2002/01/09 modified by Makoto Matsumoto
- */
- mt[mti] = (1812433253UL * (mt[mti-1] ^ (mt[mti-1] >> 30)) + mti);
- /* for > 32 bit machines */
- mt[mti] &= 0xffffffffUL;
- }
- self->pos = mti;
- return;
-}
-
-
-/*
- * initialize by an array with array-length
- * init_key is the array for initializing keys
- * key_length is its length
- */
-extern void
-init_by_array(rk_state *self, unsigned long init_key[], npy_intp key_length)
-{
- /* was signed in the original code. RDH 12/16/2002 */
- npy_intp i = 1;
- npy_intp j = 0;
- unsigned long *mt = self->key;
- npy_intp k;
-
- init_genrand(self, 19650218UL);
- k = (RK_STATE_LEN > key_length ? RK_STATE_LEN : key_length);
- for (; k; k--) {
- /* non linear */
- mt[i] = (mt[i] ^ ((mt[i - 1] ^ (mt[i - 1] >> 30)) * 1664525UL))
- + init_key[j] + j;
- /* for > 32 bit machines */
- mt[i] &= 0xffffffffUL;
- i++;
- j++;
- if (i >= RK_STATE_LEN) {
- mt[0] = mt[RK_STATE_LEN - 1];
- i = 1;
- }
- if (j >= key_length) {
- j = 0;
- }
- }
- for (k = RK_STATE_LEN - 1; k; k--) {
- mt[i] = (mt[i] ^ ((mt[i-1] ^ (mt[i-1] >> 30)) * 1566083941UL))
- - i; /* non linear */
- mt[i] &= 0xffffffffUL; /* for WORDSIZE > 32 machines */
- i++;
- if (i >= RK_STATE_LEN) {
- mt[0] = mt[RK_STATE_LEN - 1];
- i = 1;
- }
- }
-
- mt[0] = 0x80000000UL; /* MSB is 1; assuring non-zero initial array */
- self->gauss = 0;
- self->has_gauss = 0;
- self->has_binomial = 0;
-}