projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 42984a78 | 1 | .\" @(#)rand.3 6.1 (Berkeley) %G% |
| fc9e796e | 2 | .\" |
| 42984a78 | 3 | .TH RAND 3C "" |
| fc9e796e KM |
4 | .AT 3 |
| 5 | .SH NAME | |
| 6 | rand, srand \- random number generator | |
| 7 | .SH SYNOPSIS | |
| 8 | .nf | |
| 9 | .B srand(seed) | |
| 10 | .B int seed; | |
| 11 | .PP | |
| 12 | .B rand() | |
| 13 | .fi | |
| 14 | .SH DESCRIPTION | |
| c9573fe5 KM |
15 | .ft B |
| 16 | The newer random(3) should be used in new applications; | |
| 17 | rand remains for compatibilty. | |
| 18 | .ft R | |
| 19 | .PP | |
| fc9e796e KM |
20 | .I Rand |
| 21 | uses a multiplicative congruential | |
| 22 | random number generator | |
| 23 | with period 2\u\s732\s0\d | |
| 24 | to return successive pseudo-random | |
| 25 | numbers in the range from 0 to 2\u\s731\s10\d\-1. | |
| 26 | .PP | |
| 27 | The generator is reinitialized by calling | |
| 28 | .I srand | |
| 29 | with 1 as argument. | |
| 30 | It can be set to a random starting point by calling | |
| 31 | .I srand | |
| 32 | with whatever you like as argument. | |
| c9573fe5 KM |
33 | .SH "SEE ALSO" |
| 34 | random(3) |