mtext_character - Search a character in an M-text.
, int from
, int c
Search a character in an M-text.
The mtext_character() function searches M-text mt for character c .
from is less than to ,
the search begins at position from and goes
forward but does not exceed ( to
- 1). Otherwise, the search begins at
position ( from
- 1) and goes backward but does not exceed to .
An invalid position specification is regarded as both from and to being 0.
If c is found, mtext_character() returns the position of
its first occurrence. Otherwise it returns -1 without changing the external
variable merror_code . If an error is detected, it returns -1 and
assigns an error code to the external variable merror_code .
Copyright (C) 2001 Information-technology Promotion Agency (IPA)
Copyright (C) 2001-2009 National Institute of Advanced Industrial Science and
Permission is granted to copy, distribute and/or modify this document under the
terms of the GNU Free Documentation License