Digital UNIX Diffs - fseek(5) Digital UNIX Diffs - fseek(5)NAME
fseek, rewind, ftell - Reposition the file pointer of a stream
Standard C Library (libc.a)
long int offset,
long int ftell(
Specifies the I/O stream. Determines the position of the next opera‐
tion. Determines the value for the file pointer associated with the
DIFFERENCESvms-vaxc(5): OpenVMS VAX C vs DEC C Differences
With the DEC C RTL, a call to fseek(3) and rewind(3) clear the end-of-
file flag (EOF). With the VAX C RTL, such a call does not clear the
With the DEC C RTL, fseek(3) and rewind(3) can be used for file posi‐
tioning on a file opened in append mode (ie "a"). The VAX C RTL does
not support file positioning for files opened in append mode.
The DEC C RTL allows file positioning calls to seek to an arbitrary
byte within fixed-length record files. The VAX C RTL treats fixed-
length record files like all record files and only allows file posi‐
tioning to record boundaries.
With the DEC C RTL, ftell(3) now reports a file position that takes
into account the character pushed back by a call to ungetc(3). The VAX
C RTL does not adjust file position as a result of calls to ungetc(3).
Functions: fseek(3), rewind(3), ftell(3), fsetpos(5)CATEGORY INDEXvms-vaxc(5)
Digital UNIX Diffs - fseek(5)