MEMSEARCHR

MEMSEARCHR returns a size_t ¹ value that specifies the first position (from the right) in a buffer at which any character, graphic, or widechar in a given string appears.

>>-MEMSEARCHR--(--p--,--n--,--x--)-----------------------------><

p

Address of buffer to be searched

n

Length of buffer to be searched

x

String-expression

The buffer length must be nonnegative and must have a computational type. The buffer length is converted to type size_t.

The string-expression x must have type CHARACTER (including PICTURE), GRAPHIC, or WIDECHAR. The buffer length is interpreted as the number of units of that string type.

The address p and the length n specify the "string" in which to search for any character, graphic, or widechar that appears in x.

If either the buffer length n is zero or x is the null string, the result is zero.

If x does not occur in the buffer, the result is zero.

  dcl cb(128*1024) char(1);
  dcl wb(128*1024) widechar(1);
  dcl pos fixed bin(31);

  /* 128K bytes searched from the right for a numeric */
  pos = memsearchr( addr(cb), stg(cb), '012345789' );

  /* 256K bytes searched from the right for a widechar '0' or '1' */
  pos = memsearchr( addr(wb), stg(wb), '0030_0031'wx );