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Feature: Add $SEEK_SET, $SEEK_CUR, $SEEK_END #3000

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Feature: Add $SEEK_SET, $SEEK_CUR, $SEEK_END #3000

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21 changes: 21 additions & 0 deletions tdishr/TdiIo.c
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Original file line number Diff line number Diff line change
Expand Up @@ -182,6 +182,27 @@ int Tdi1Fclose(opcode_t opcode __attribute__((unused)),
return TdiPutLong((int *)&err, out_ptr);
}

mdsdsc_t * Tdi3SeekSet()
{
static const int value = SEEK_SET;
static const mdsdsc_t constant = { sizeof(value), DTYPE_L, CLASS_S, (char *)&value };
return (mdsdsc_t *)&constant;
}

mdsdsc_t * Tdi3SeekCur()
{
static const int value = SEEK_CUR;
static const mdsdsc_t constant = { sizeof(value), DTYPE_L, CLASS_S, (char *)&value };
return (mdsdsc_t *)&constant;
}

mdsdsc_t * Tdi3SeekEnd()
{
static const int value = SEEK_END;
static const mdsdsc_t constant = { sizeof(value), DTYPE_L, CLASS_S, (char *)&value };
return (mdsdsc_t *)&constant;
}

/*----------------------------------------------
Specify position of file pointer.
err = FSEEK(unit, offset, origin)
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3 changes: 3 additions & 0 deletions tdishr/opcodes.csv
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Original file line number Diff line number Diff line change
Expand Up @@ -460,3 +460,6 @@
"458","List","LIST","List","undef","undef","XX","YY","XX","YY","0","254","OK+I+S","%f9+ [a..z1:z2:dz..n@[this]]"
"459","Squeeze","SQUEEZE","Reshape","undef","undef","XX","YY","XX","YY","1","2","OK","%f9+ squeeze(array, [min ndim]) "
"460","Flatten","FLATTEN","Reshape","undef","undef","XX","YY","XX","YY","1","1","OK","%f9+ flatten(array) "
"461","SeekSet","$SEEK_SET","Constant","undef","SeekSet","VV","VV","VV","VV","0","0","CONST","SEEK_SET"
"462","SeekCur","$SEEK_CUR","Constant","undef","SeekCur","VV","VV","VV","VV","0","0","CONST","SEEK_CUR"
"463","SeekEnd","$SEEK_END","Constant","undef","SeekEnd","VV","VV","VV","VV","0","0","CONST","SEEK_END"