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