| rand48.3 (108087) | rand48.3 (131504) |
|---|---|
| 1.\" Copyright (c) 1993 Martin Birgmeier 2.\" All rights reserved. 3.\" 4.\" You may redistribute unmodified or modified versions of this source 5.\" code provided that the above copyright notice and this and the 6.\" following conditions are retained. 7.\" 8.\" This software is provided ``as is'', and comes with no warranties 9.\" of any kind. I shall in no event be liable for anything that happens 10.\" to anyone/anything when using this software. 11.\" 12.\" @(#)rand48.3 V1.0 MB 8 Oct 1993 | 1.\" Copyright (c) 1993 Martin Birgmeier 2.\" All rights reserved. 3.\" 4.\" You may redistribute unmodified or modified versions of this source 5.\" code provided that the above copyright notice and this and the 6.\" following conditions are retained. 7.\" 8.\" This software is provided ``as is'', and comes with no warranties 9.\" of any kind. I shall in no event be liable for anything that happens 10.\" to anyone/anything when using this software. 11.\" 12.\" @(#)rand48.3 V1.0 MB 8 Oct 1993 |
| 13.\" $FreeBSD: head/lib/libc/gen/rand48.3 108087 2002-12-19 09:40:28Z ru $ | 13.\" $FreeBSD: head/lib/libc/gen/rand48.3 131504 2004-07-02 23:52:20Z ru $ |
| 14.\" 15.Dd October 8, 1993 16.Dt RAND48 3 17.Os 18.Sh NAME 19.Nm drand48 , 20.Nm erand48 , 21.Nm lrand48 , --- 54 unchanged lines hidden (view full) --- 76such that the values produced lie in the interval [0.0, 1.0). 77.Pp 78The 79.Fn lrand48 80and 81.Fn nrand48 82functions 83return values of type long in the range | 14.\" 15.Dd October 8, 1993 16.Dt RAND48 3 17.Os 18.Sh NAME 19.Nm drand48 , 20.Nm erand48 , 21.Nm lrand48 , --- 54 unchanged lines hidden (view full) --- 76such that the values produced lie in the interval [0.0, 1.0). 77.Pp 78The 79.Fn lrand48 80and 81.Fn nrand48 82functions 83return values of type long in the range |
| 84[0, 2**31-1]. The high-order (31) bits of | 84[0, 2**31-1]. 85The high-order (31) bits of |
| 85r(n+1) are loaded into the lower bits of the returned value, with 86the topmost (sign) bit set to zero. 87.Pp 88The 89.Fn mrand48 90and 91.Fn jrand48 92functions 93return values of type long in the range | 86r(n+1) are loaded into the lower bits of the returned value, with 87the topmost (sign) bit set to zero. 88.Pp 89The 90.Fn mrand48 91and 92.Fn jrand48 93functions 94return values of type long in the range |
| 94[-2**31, 2**31-1]. The high-order (32) bits of | 95[-2**31, 2**31-1]. 96The high-order (32) bits of |
| 95r(n+1) are loaded into the returned value. 96.Pp 97The 98.Fn drand48 , 99.Fn lrand48 , 100and 101.Fn mrand48 102functions | 97r(n+1) are loaded into the returned value. 98.Pp 99The 100.Fn drand48 , 101.Fn lrand48 , 102and 103.Fn mrand48 104functions |
| 103use an internal buffer to store r(n). For these functions | 105use an internal buffer to store r(n). 106For these functions |
| 104the initial value of r(0) = 0x1234abcd330e = 20017429951246. 105.Pp 106On the other hand, 107.Fn erand48 , 108.Fn nrand48 , 109and 110.Fn jrand48 111use a user-supplied buffer to store the seed r(n), --- 70 unchanged lines hidden --- | 107the initial value of r(0) = 0x1234abcd330e = 20017429951246. 108.Pp 109On the other hand, 110.Fn erand48 , 111.Fn nrand48 , 112and 113.Fn jrand48 114use a user-supplied buffer to store the seed r(n), --- 70 unchanged lines hidden --- |