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Diffstat (limited to 'man3/rand.3')
| -rw-r--r-- | man3/rand.3 | 50 |
1 files changed, 25 insertions, 25 deletions
diff --git a/man3/rand.3 b/man3/rand.3 index ef27552fbd..5c1ef04fa5 100644 --- a/man3/rand.3 +++ b/man3/rand.3 @@ -96,26 +96,15 @@ between 0 and RAND_MAX. The .BR srand () function returns no value. -.SH EXAMPLE -POSIX.1-2001 gives the following example of an implementation of +.SH "CONFORMING TO" +The functions .BR rand () and -.BR srand (), -possibly useful when one needs the same sequence on two different machines. -.sp -.nf - static unsigned long next = 1; - - /* RAND_MAX assumed to be 32767 */ - int myrand(void) { - next = next * 1103515245 + 12345; - return((unsigned)(next/65536) % 32768); - } - - void mysrand(unsigned seed) { - next = seed; - } -.fi +.BR srand () +conform to SVr4, 4.3BSD, C89, C99, POSIX.1-2001. +The function +.BR rand_r () +is from POSIX.1-2001. .SH NOTES The versions of .BR rand () @@ -169,15 +158,26 @@ in depth, see Chapter 3 (Random Numbers) in Donald E. Knuth's .IR "The Art of Computer Programming" , volume 2 (Seminumerical Algorithms), 2nd ed.; Reading, Massachusetts: Addison-Wesley Publishing Company, 1981. -.SH "CONFORMING TO" -The functions +.SH EXAMPLE +POSIX.1-2001 gives the following example of an implementation of .BR rand () and -.BR srand () -conform to SVr4, 4.3BSD, C89, C99, POSIX.1-2001. -The function -.BR rand_r () -is from POSIX.1-2001. +.BR srand (), +possibly useful when one needs the same sequence on two different machines. +.sp +.nf + static unsigned long next = 1; + + /* RAND_MAX assumed to be 32767 */ + int myrand(void) { + next = next * 1103515245 + 12345; + return((unsigned)(next/65536) % 32768); + } + + void mysrand(unsigned seed) { + next = seed; + } +.fi .SH "SEE ALSO" .BR drand48 (3), .BR random (3) |