| [41] | 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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