toebes/interdata-basic

Interdata 7/16 Basic Interpreter

interdata-basic's Issues

Implement RENUM command

Normalize source code on input

Convert all lowercase keywords to uppercase, add appropriate spacing for readability.

1END is not parsed correctly

1END should be treated as 1 END and not 1E ND

Make ; an alias for print

Implement Rewind/BackSpace/WriteFileMark for external files

Implement RANDOM reset

RANDOM is supposed to reuse the set of random numbers.

Implement INPUT command

Implement saving logical units to local data or external files

Implement PRINT USING <format>

Format characters are +-@,.$^
@ represents a digit
. Represents the decimal point
+ Represents a fixed plus sign
- Represents a fixed minus sign
++ or -- Floating sign
$ Fixed dollar sign
$$ Floating dollar sign
, Separator comma
^ Exponent indicator

Implement ON <n > GOTO/GOSUB

Implement ON ERROR

Implement Matrix commands

Implement Matrix commands:

• MAT READ A,B, ... Read DATA values for previously dimensioned arrays.
• MAT INPUT A,B ... Input values for previously dimensioned arrays.
• MAT PRINT A,B, ... Print current values of previously dimensioned arrays. (The semi-colon print delimiter can also be used. )
• MAT A=B Matrix A is dimensioned to the dimensions of matrix B and the values of B are stored into A.
• MAT A=B+C Add or subtract matrices Band C. The dimensions of Band C must be identical. Dimension A to the dimensions of B and C and store the result into A.
• MAT A=B-C
• MAT A=B*C Matrix multiply B and C. Dimension A to the dimensions of the resulting matrix and store the values into A. The dimensions of B
  and C must be compatible as defined later in the section on matrix multiplication.
• MAT A=(expression)*B Scalar multiply matrix B by the parenthesized expression. Dimension A to the dimensions of B and store the values into A
• MAT A=INV(B) Invert matrix B. Dimension A to the dimensions of Band store the values of the inverse matrix into A. B must be a square matrix.
• MAT A=TRN(B) Transpose matrix B. Dimension A to the dimensions of the resulting matrix and store the values into A. A and B must be two
  distinct arrays.
• MAT A=(expression) Store a constant value in all elements of A.
• MAT A=IDN Store the identity matrix in A.
• MAT A=DET Store the determinant of matrix A into element A (0, 0) of array A.