EXTYPE function

returns the number that means the exception type.
EXTYPE can be written only in an exception handler.

Note. EXTYPE is a reserved word.

Principal EXTYPEs

1000 level.  Overflow
  1002 Overflow in a numeric expression
  1003 Overflow in a numeric supplied function
  1004 Overflow in a VAL function
  1005 Overflow in a numeric array
  1006 Overflow in a READ statement
  1008 Overflow in a file input
  1009 Overflow in a DET or DOT function
2000 level.  Subscript Errors
  2001 Subscript out of bounds
3000 level.  Math Errors
  3001 Division by zero
  3002 Negative to the non-integral power
  3003 Zero to the negative power
  3004 Logarithm of zero or negative
  3005 SQR of a negative number
  3006 Zero divisor in MOD or REMAINDER
  3007 Out of range in ACOS or ASIN
  3008 ANGLE(0,0)
  3009 INV of a singular matrix
4000 level.  Parameter Errors
  4001 VAL of non-numeric-constant
  4002 CHR$ Out of Range
  4003 ORD Out of Range
5000 level.  Array Storage Errors
6000 level.  Matrix Errors
7000 level.  File Usage Errors
8000 level.  I/O Errors
  8001 READ out of data
  8011 End of File
  8012 Too Few Data in a record
  8013 Too Many Data in a record
  8101 Non-numeric constant on file input
  8105 Syntactically incorrect input reply from file
  8120 Type Mismatch on INTERNAL input
  8201 Incorrect Format String
  8202 No Format Item
  8401 Timeout on INPUT
9000 level.  Device Errors
10000 level.  Control Errors
11000 level.  Graphics Errors

See also Nonfatal Errors.

Implementation defined EXTYPEs
-3009 Invalid operation on transformation
-1005 Overflow on transformation
-103 Out of Memory for Arrays
-102 Out of memory for Simple Variables
-101 System Stack Overflow
-100 Out of memory for the execution
7101 Incorrect File Description
7102 File Not Exist
9003 Failed to Delete File
9004 File Already Exist

Propagation of Exception
If an exception is propagated out of the procedure, EXTYPE becomes the value obtained by adding 100000 to the initial extype, while if the initial extype is negative, EXTYPE becomes the value obtained by subtracting 100000 from it.
The extype before propagated can be obtained using REMAINDER(EXTYPE,100000).