Mercurial > repo

annotate src/ploki/random.c @ 8916:0234daffd946

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
<oerjan> addquote <int-e> I couldn\'t help thinking that maybe if one considers the ramifications in full detail it will turn out that overthinking is often not helpful and therefore, not something to be proud of.
author HackBot
date Sun, 14 Aug 2016 02:31:47 +0000
parents ac0403686959
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4223
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
1 #include "config.h"
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
2 #include "random.h"
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
3
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
4 #include <stdio.h>
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
5 #include <stdlib.h>
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
6 #include <time.h>
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
7
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
8 void randseed(void) {
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
9 unsigned seed;
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
10
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
11 seed = time(NULL);
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
12 #if HAVE_DEV_URANDOM_P
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
13 {
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
14 FILE *fp;
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
15
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
16 if ((fp = fopen("/dev/urandom", "rb"))) {
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
17 fread(&seed, sizeof seed, 1, fp);
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
18 fclose(fp);
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
19 }
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
20 }
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
21 #endif
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
22 srand(seed);
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
23 }
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
24
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
25 double randval(void) {
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
26 return rand() / (RAND_MAX + 1.0);
ac0403686959 <oerjan> rm -rf src/ploki; mv ploki src
HackBot
parents:
diff changeset
27 }