MEMVERIFYR

MEMVERIFYR returns a size_t ¹ value that specifies the position in a buffer of the first (from the right) character, graphic, uchar, or widechar that is not in a specified string.

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, UCHAR, 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, uchar, or widechar that does not appear in x.

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

If all the characters, graphics, uchars, or widechars in the buffer do appear in x, 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 non-numeric */
  pos = memverify( addr(cb), stg(cb), '012345789' );

  /* 256K bytes searched from the right for the a non-blank widechar */
  pos = memverify( addr(wb), stg(wb), '0020'wx );