mirrors/lua
1
0
Fork 0
mirror of https://github.com/lua/lua synced 2024-12-28 21:29:44 +03:00
Code Issues Packages Projects Releases Wiki Activity

don´t need the "+1", the "%" is enough to garantee r<1.

Browse Source
This commit is contained in:
Roberto Ierusalimschy 1998-12-30 19:23:26 -02:00
parent 59f8e6fb77
commit 4fbb2531b3
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lmathlib.c
View File

@ -1,5 +1,5 @@
/*
** $Id: lmathlib.c,v 1.12 1998/12/28 13:44:54 roberto Exp roberto $
** $Id: lmathlib.c,v 1.13 1998/12/30 17:22:17 roberto Exp roberto $
** Lua standard mathematical library
** See Copyright Notice in lua.h
*/
@ -154,9 +154,9 @@ static void math_max (void)
static void math_random (void) {
/* the '%' is needed because on some systems (SunOS!) "rand()" may
return a value bigger than RAND_MAX... */
double r = (double)(rand()%RAND_MAX) / ((double)RAND_MAX+1.0);
/* the '%' avoids the (rare) case of r==1, and is needed also because on
some systems (SunOS!) "rand()" may return a value bigger than RAND_MAX */
double r = (double)(rand()%RAND_MAX) / (double)RAND_MAX;
int l = luaL_opt_int(1, 0);
if (l == 0)
lua_pushnumber(r);