IntelÂ® Fortran Libraries Reference

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2 Intel Fortran Libraries ReferenceFSEEKExampleuse IFPORTinteger*4 lunit, i4character*26 stringcharacter*1 char1lunit = 1open (lunit,file = 'fputc.dat')do i = 1,26char1 = char(123-i)i4 = fputc(1,char1) !make valid writesif (i4.ne.0) iflag = 1enddorewind (1)read (1,'(a)') stringprint *, stringPortability Function: Repositions a file specified by a Fortran external unit.Module: USE IFPORTSyntaxresult = FSEEK (lunit, offset, from)lunit(Input) INTEGER(4). External unit number of a file.offset(Input) INTEGER(4) or INTEGER(8). Offset in bytes, relative to from, that is to be the newlocation of the file marker.from(Input) INTEGER(4). A position in the file. It must be one of the following:Value Variable Position0 SEEK_SET Positions the file relative to the beginning of the file.1 SEEK_CUR Positions the file relative to the current position.2 SEEK_END Positions the file relative to the end of the file.2-90
Descriptions of the Library Routines 2FSTATResults:The result type is INTEGER(4). The result is zero if the repositioning was successful; otherwise,an error code, such as:EINVAL: The specified unit is invalid (either not already open, or an invalid unit number), orthe from parameter is invalid.The file specified in lunit must be open.CompatibilityCONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS WINDOWS LIBExampleUSE IFPORTinteger(4) istat, offset, iposcharacter icharOPEN (unit=1,file='datfile.dat')offset = 5ipos = 0istat=fseek(1,offset,ipos)if (.NOT. stat) thenistat=fgetc(1,ichar)print *, 'data is ',icharend ifPortability Function: Returns detailed information about a file specified by a external unitnumber.Module: USE IFPORTSyntaxresult = FSTAT (lunit, statb)lunit(Input) INTEGER(4). External unit number of the file to examine.statb(Output) INTEGER(4) or INTEGER(8). One-dimensional array of size 12; where the systeminformation is stored. The elements of statb contain the following values:2-91
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Overview of the Libraries 1This cha
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