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commit 4fbb2531b3e60094e760e30fffbd9c8b2d67a238
parent 59f8e6fb7710e46539fb9bf63131b45012bf86ef
Author: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date:   Wed, 30 Dec 1998 19:23:05 -0200

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

Diffstat:
Mlmathlib.c | 8++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lmathlib.c b/lmathlib.c @@ -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);