[41] | 1 | ; File name : Math.inc |
---|
| 2 | ; Project name : Assembly Library |
---|
| 3 | ; Created date : 12.8.2010 |
---|
| 4 | ; Last update : 12.8.2010 |
---|
| 5 | ; Author : Tomi Tilli |
---|
| 6 | ; Description : Math related macros. |
---|
| 7 | %ifndef MATH_INC |
---|
| 8 | %define MATH_INC |
---|
| 9 | |
---|
| 10 | FALSE EQU 0 |
---|
| 11 | TRUE EQU 1 |
---|
| 12 | |
---|
| 13 | |
---|
| 14 | ;-------------------------------------------------------------------- |
---|
| 15 | ; MIN_U Unsigned comparison |
---|
| 16 | ; MIN_S Signed comparison |
---|
| 17 | ; Parameters: |
---|
| 18 | ; %1: Operand 1 |
---|
| 19 | ; %2: Operand 2 |
---|
| 20 | ; Returns: |
---|
| 21 | ; %1: Lesser operand |
---|
| 22 | ; Corrupts registers: |
---|
| 23 | ; Nothing |
---|
| 24 | ;-------------------------------------------------------------------- |
---|
| 25 | %macro MIN_U 2 |
---|
| 26 | cmp %1, %2 ; Is %1 smaller? |
---|
| 27 | jb %%Return ; If so, return |
---|
| 28 | mov %1, %2 ; Copy %2 to %1 |
---|
| 29 | ALIGN JUMP_ALIGN |
---|
| 30 | %%Return: |
---|
| 31 | %endmacro |
---|
| 32 | |
---|
| 33 | %macro MIN_S 2 |
---|
| 34 | cmp %1, %2 ; Is %1 smaller? |
---|
| 35 | jl %%Return ; If so, return |
---|
| 36 | mov %1, %2 ; Copy %2 to %1 |
---|
| 37 | ALIGN JUMP_ALIGN |
---|
| 38 | %%Return: |
---|
| 39 | %endmacro |
---|
| 40 | |
---|
| 41 | |
---|
| 42 | ;-------------------------------------------------------------------- |
---|
| 43 | ; MAX_U Unsigned comparison |
---|
| 44 | ; MAX_S Signed comparison |
---|
| 45 | ; Parameters: |
---|
| 46 | ; %1: Operand 1 |
---|
| 47 | ; %2: Operand 2 |
---|
| 48 | ; Returns: |
---|
| 49 | ; %1: Lesser operand |
---|
| 50 | ; Corrupts registers: |
---|
| 51 | ; Nothing |
---|
| 52 | ;-------------------------------------------------------------------- |
---|
| 53 | %macro MAX_U 2 |
---|
| 54 | cmp %1, %2 ; Is %1 greater? |
---|
| 55 | ja %%Return ; If so, return |
---|
| 56 | mov %1, %2 ; Copy %2 to %1 |
---|
| 57 | ALIGN JUMP_ALIGN |
---|
| 58 | %%Return: |
---|
| 59 | %endmacro |
---|
| 60 | |
---|
| 61 | %macro MAX_S 2 |
---|
| 62 | cmp %1, %2 ; Is %1 greater? |
---|
| 63 | jg %%Return ; If so, return |
---|
| 64 | mov %1, %2 ; Copy %2 to %1 |
---|
| 65 | ALIGN JUMP_ALIGN |
---|
| 66 | %%Return: |
---|
| 67 | %endmacro |
---|
| 68 | |
---|
| 69 | |
---|
| 70 | %endif ; MATH_INC |
---|