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86 lines
1.3 KiB
NASM
86 lines
1.3 KiB
NASM
%ifdef CONFIG
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{
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"RegData": {
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"RSI": ["0x18"]
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},
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"Env": { "FEX_X87REDUCEDPRECISION" : "1" }
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}
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%endif
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mov rdx, 0xe0000000
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mov rsi, 0
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; Matching positive-positive
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mov rax, 0x3ff0000000000000 ; 1.0
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mov [rdx + 8 * 0], rax
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mov eax, 1
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mov [rdx + 8 * 1], eax
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fld qword [rdx + 8 * 0]
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ficomp dword [rdx + 8 * 1]
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; Get the status word
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mov rax, 0
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fstsw ax
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; Extract C3 to see if it was equal
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shr ax, 14
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and ax, 1
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or rsi, rax
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shl rsi, 1
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; Matching negative-negative
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mov rax, 0xbff0000000000000 ; -1.0
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mov [rdx + 8 * 0], rax
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mov eax, -1
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mov [rdx + 8 * 1], eax
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fld qword [rdx + 8 * 0]
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ficomp dword [rdx + 8 * 1]
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; Get the status word
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mov rax, 0
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fstsw ax
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; Extract C3 to see if it was equal
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shr ax, 14
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and ax, 1
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or rsi, rax
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shl rsi, 1
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; Nonmatching negative-positive
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mov rax, 0xbff0000000000000 ; -1.0
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mov [rdx + 8 * 0], rax
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mov eax, 1
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mov [rdx + 8 * 1], eax
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fld qword [rdx + 8 * 0]
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ficomp dword [rdx + 8 * 1]
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; Get the status word
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mov rax, 0
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fstsw ax
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; Extract C3 to see if it was equal
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shr ax, 14
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and ax, 1
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or rsi, rax
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shl rsi, 1
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; Nonmatching positive-negative
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mov rax, 0x3ff0000000000000 ; 1.0
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mov [rdx + 8 * 0], rax
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mov eax, -1
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mov [rdx + 8 * 1], eax
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fld qword [rdx + 8 * 0]
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ficomp dword [rdx + 8 * 1]
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; Get the status word
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mov rax, 0
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fstsw ax
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; Extract C3 to see if it was equal
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shr ax, 14
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and ax, 1
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or rsi, rax
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shl rsi, 1
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hlt
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