97 lines
1.3 KiB
NASM
97 lines
1.3 KiB
NASM
section .text
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global min
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global minu
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global max
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global maxu
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global islower
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global isupper
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;----- min(int a, int b) -----;
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; return value: lowest value
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min:
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push rbp
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mov rbp, rsp
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mov rax, rdi
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cmp rdi, rsi
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jl .quit
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mov rax, rsi
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.quit:
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leave
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ret
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;----- minu(unsigned int a, unsigned int b) -----;
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; return value: lowest value
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minu:
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push rbp
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mov rbp, rsp
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mov rax, rdi
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cmp rdi, rsi
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jb .quit
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mov rax, rsi
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.quit:
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leave
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ret
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;----- max(int a, int b) -----;
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; return value: highest value
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max:
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push rbp
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mov rbp, rsp
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mov rax, rdi
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cmp rdi, rsi
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jg .quit
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mov rax, rsi
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.quit:
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leave
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ret
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;----- maxu(unsigned int a, unsigned int b) -----;
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; return value: highest value
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maxu:
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push rbp
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mov rbp, rsp
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mov rax, rdi
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cmp rdi, rsi
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ja .quit
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mov rax, rsi
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.quit:
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leave
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ret
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;----- islower(char* c) -----;
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; return value: 1 (character is in range of 'a'-'z') or 0 (character is nog in range of 'a'-'z')
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islower:
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push rbp
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mov rbp, rsp
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xor rax, rax
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cmp byte [rdi], 'a'
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jb .quit
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cmp byte [rdi], 'z'
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ja .quit
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mov rax, 1
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.quit:
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leave
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ret
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;----- isupper(char* c) -----;
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; return value: 1 (character is in range of 'A'-'Z') or 0 (character is not in range of 'A'-'Z')
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isupper:
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push rbp
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mov rbp, rsp
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xor rax, rax
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cmp byte [rdi], 'A'
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jb .quit
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cmp byte [rdi], 'Z'
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ja .quit
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mov rax, 1
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.quit:
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leave
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ret
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