1.\" Copyright (c) 1990, 1991 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" Chris Torek and the American National Standards Committee X3, 6.\" on Information Processing Systems. 7.\" 8.\" %sccs.include.redist.man% 9.\" 10.\" @(#)memset.3 5.5 (Berkeley) 07/12/92 11.\" 12.Dd 13.Dt MEMSET 3 14.Os 15.Sh NAME 16.Nm memset 17.Nd write a byte to byte string 18.Sh SYNOPSIS 19.Fd #include <string.h> 20.Ft void * 21.Fn memset "void *b" "int c" "size_t len" 22.Sh DESCRIPTION 23The 24.Fn memset 25function 26writes 27.Fa len 28bytes of value 29.Fa c 30(converted to an unsigned char) to the string 31.Fa b . 32.Sh RETURNS 33The 34.Fn memset 35function returns its first argument. 36.Sh SEE ALSO 37.Xr bzero 3 , 38.Xr swab 3 39.Sh STANDARDS 40The 41.Fn memset 42function 43conforms to 44.St -ansiC . 45