diff options
| author | Vito Caputo <vcaputo@pengaru.com> | 2022-05-21 23:27:02 -0700 |
|---|---|---|
| committer | Vito Caputo <vcaputo@pengaru.com> | 2022-05-21 23:27:02 -0700 |
| commit | c1fed8c508dd89c86de7dd647de0d014c441344e (patch) | |
| tree | fac4d327c18fe5a2a205a2f4b4ad7f8287ec3536 /src/modules/spiro | |
| parent | e21cdb67718a5d203372fd0c425e8be3e1d273f3 (diff) | |
modules/*: first stab at utilizing supplied seeds
This is a mostly mechanical change of using rand_r() in place of
rand(), using the provided seed as the seed state.
There's some outstanding rand()s outside of create_context()
which should probably get switched over, with the seed being
stowed in the context struct. I didn't bother going deeper on
this at the moment in the interests of getting to sleep soon.
Diffstat (limited to 'src/modules/spiro')
| -rw-r--r-- | src/modules/spiro/spiro.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/modules/spiro/spiro.c b/src/modules/spiro/spiro.c index 07d9fbf..a2adb7b 100644 --- a/src/modules/spiro/spiro.c +++ b/src/modules/spiro/spiro.c @@ -38,12 +38,12 @@ static void * spiro_create_context(unsigned seed, unsigned ticks, unsigned n_cpu if (!ctxt) return NULL; - ctxt->r=.25f+(rand()/(float)RAND_MAX)*.5f; + ctxt->r=.25f+(rand_r(&seed)/(float)RAND_MAX)*.5f; if(ctxt->r>.5f) ctxt->r_dir=-1; else ctxt->r_dir=1; - ctxt->p=(rand()/(float)RAND_MAX)*ctxt->r; + ctxt->p=(rand_r(&seed)/(float)RAND_MAX)*ctxt->r; ctxt->p_dir=ctxt->r_dir*-1; #ifdef DEBUG printf("spiro: initial context: r=%f, dir=%i, p=%f, dir=%i\n", ctxt->r, ctxt->r_dir, ctxt->p, ctxt->p_dir); |