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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 19:41:07 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 19:41:07 +0000
commit3af6d22bb3850ab2bac67287e3a3d3b0e32868e5 (patch)
tree3ee7a3ec64525911fa865bb984c86d997d855527 /man3/rand.3
parentAdding debian version 6.05.01-1. (diff)
downloadmanpages-3af6d22bb3850ab2bac67287e3a3d3b0e32868e5.tar.xz
manpages-3af6d22bb3850ab2bac67287e3a3d3b0e32868e5.zip
Merging upstream version 6.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--man3/rand.327
1 files changed, 13 insertions, 14 deletions
diff --git a/man3/rand.3 b/man3/rand.3
index 6146ce9..681a5f7 100644
--- a/man3/rand.3
+++ b/man3/rand.3
@@ -19,7 +19,7 @@
.\" Modified 2003-11-15, aeb, added rand_r
.\" 2010-09-13, mtk, added example program
.\"
-.TH rand 3 2023-07-20 "Linux man-pages 6.05.01"
+.TH rand 3 2023-10-31 "Linux man-pages 6.7"
.SH NAME
rand, rand_r, srand \- pseudo-random number generator
.SH LIBRARY
@@ -28,18 +28,18 @@ Standard C library
.SH SYNOPSIS
.nf
.B #include <stdlib.h>
-.PP
+.P
.B int rand(void);
.BI "void srand(unsigned int " seed );
-.PP
+.P
.BI "[[deprecated]] int rand_r(unsigned int *" seedp );
.fi
-.PP
+.P
.RS -4
Feature Test Macro Requirements for glibc (see
.BR feature_test_macros (7)):
.RE
-.PP
+.P
.BR rand_r ():
.nf
Since glibc 2.24:
@@ -53,7 +53,7 @@ The
function returns a pseudo-random integer in the range 0 to
.B RAND_MAX
inclusive (i.e., the mathematical range [0,\ \fBRAND_MAX\fR]).
-.PP
+.P
The
.BR srand ()
function sets its argument as the seed for a new
@@ -62,11 +62,11 @@ sequence of pseudo-random integers to be returned by
These sequences are repeatable by calling
.BR srand ()
with the same seed value.
-.PP
+.P
If no seed value is provided, the
.BR rand ()
function is automatically seeded with a value of 1.
-.PP
+.P
The function
.BR rand ()
is not reentrant, since it
@@ -77,7 +77,7 @@ In order to get reproducible behavior in a threaded
application, this state must be made explicit;
this can be done using the reentrant function
.BR rand_r ().
-.PP
+.P
Like
.BR rand (),
.BR rand_r ()
@@ -93,7 +93,7 @@ is called with the same initial value for the integer pointed to by
.IR seedp ,
and that value is not modified between calls,
then the same pseudo-random sequence will result.
-.PP
+.P
The value pointed to by the
.I seedp
argument of
@@ -130,7 +130,6 @@ T{
.BR srand ()
T} Thread safety MT-Safe
.TE
-.sp 1
.SH VERSIONS
The versions of
.BR rand ()
@@ -175,7 +174,7 @@ POSIX.1-2001 gives the following example of an implementation of
and
.BR srand (),
possibly useful when one needs the same sequence on two different machines.
-.PP
+.P
.in +4n
.EX
static unsigned long next = 1;
@@ -191,7 +190,7 @@ void mysrand(unsigned int seed) {
}
.EE
.in
-.PP
+.P
The following program can be used to display the
pseudo-random sequence produced by
.BR rand ()
@@ -199,7 +198,7 @@ when given a particular seed.
When the seed is
.IR \-1 ,
the program uses a random seed.
-.PP
+.P
.in +4n
.\" SRC BEGIN (rand.c)
.EX