U-Code interpreter

• Fully implemented interpreter of U-Code standard
• Has additional calculation of floating point feature. Details are below (due to TTime Language Compiler's feature)
• Fully compatible with TTime Language Compiler
• Support recursive function call

Usage

./src/interpreter.py '<UCode source path>' '<result file path>'

Additional feature

Explain

• this support 32bit floating point calculation.
• Every floating point value must notated with integer (??? pass and read below).
• according to IEEE 754, floating point value is converted to bit-array. and that bit-array can read as integer in computer.
• this trick is base of floating point support.

Example

32 bit array 11000000010110011001100110011010 is

• -3.4 in IEEE 754.
• -1067869798 in 32bit integer
• converter

float supporting functions

1. addFloat

• usage: call addFloat
• pop 2 value (a, b) in stack and push a + b.

2. subFloat

• usage: call subFloat
• pop 2 value (a, b) in stack and push a - b.

3. mulFloat

• usage: call mulFloat
• pop 2 value (a, b) in stack and push a * b.

4. divFloat

• usage: call divFloat
• pop 2 value (a, b) in stack and push a / b.

5. modFloat

• usage: call divFloat
• pop 2 value (a, b) in stack and push a % b.

6. negFloat

• usage: call divFloat
• pop 1 value (a) in stack and push -a.

7. F2I

• usage: call F2I
• pop 1 value in stack and push value that converted to integer
• ex: if a is 4.0 (IEEE 754 form 01000000100000000000000000000000), pushed value is 4 (100b)

8. I2F

• usage: call I2F
• pop 1 value in stack and push value that converted to float
• ex: if a is 4 (100b), pushed value is 4.0 (IEEE 754 form 01000000100000000000000000000000)

9. writeF

• usage: call writeF
• pop 1 float value and print as float