diff options
Diffstat (limited to 'man3/random.3')
| -rw-r--r-- | man3/random.3 | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/man3/random.3 b/man3/random.3 index 9c69344..3d1c4dd 100644 --- a/man3/random.3 +++ b/man3/random.3 @@ -11,7 +11,7 @@ .\" Modified Sat Jul 24 18:13:39 1993 by Rik Faith (faith@cs.unc.edu) .\" Modified Sun Aug 20 21:47:07 2000, aeb .\" -.TH random 3 2023-07-20 "Linux man-pages 6.05.01" +.TH random 3 2023-10-31 "Linux man-pages 6.7" .SH NAME random, srandom, initstate, setstate \- random number generator .SH LIBRARY @@ -20,19 +20,19 @@ Standard C library .SH SYNOPSIS .nf .B #include <stdlib.h> -.PP +.P .B long random(void); .BI "void srandom(unsigned int " seed ); -.PP +.P .BI "char *initstate(unsigned int " seed ", char " state [. n "], size_t " n ); .BI "char *setstate(char *" state ); .fi -.PP +.P .RS -4 Feature Test Macro Requirements for glibc (see .BR feature_test_macros (7)): .RE -.PP +.P .BR random (), .BR srandom (), .BR initstate (), @@ -52,7 +52,7 @@ return successive pseudo-random numbers in the range from 0 to 2\[ha]31\ \-\ 1. The period of this random number generator is very large, approximately .IR "16\ *\ ((2\[ha]31)\ \-\ 1)" . -.PP +.P The .BR srandom () function sets its argument as the seed for a new @@ -66,7 +66,7 @@ If no seed value is provided, the .BR random () function is automatically seeded with a value of 1. -.PP +.P The .BR initstate () function allows a state array \fIstate\fP to @@ -85,7 +85,7 @@ Using less than 8 bytes results in an error. \fIseed\fP is the seed for the initialization, which specifies a starting point for the random number sequence, and provides for restarting at the same point. -.PP +.P The .BR setstate () function changes the state array used by the @@ -109,14 +109,14 @@ function returns a value between 0 and The .BR srandom () function returns no value. -.PP +.P The .BR initstate () function returns a pointer to the previous state array. On failure, it returns NULL, and .I errno is set to indicate the error. -.PP +.P On success, .BR setstate () returns a pointer to the previous state array. @@ -152,7 +152,6 @@ T{ .BR setstate () T} Thread safety MT-Safe .TE -.sp 1 .SH STANDARDS POSIX.1-2008. .SH HISTORY @@ -164,7 +163,7 @@ Random-number generation is a complex topic. William T.\& Vetterling; New York: Cambridge University Press, 2007, 3rd ed.) provides an excellent discussion of practical random-number generation issues in Chapter 7 (Random Numbers). -.PP +.P For a more theoretical discussion which also covers many practical issues in depth, see Chapter 3 (Random Numbers) in Donald E.\& Knuth's .IR "The Art of Computer Programming" , |