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我正在自下而上地c阅读一本书,它有通过以下方式获得浮点指数的指令GCC:
c
GCC
asm ("getf.exp %0=%1" : "=r"(exp) : "f"(d));
说它适用于安腾。在我的 Core i7 GCC 上说Error: no such instruction: 'getf.exp %rax=%st'。
Error: no such instruction: 'getf.exp %rax=%st'
我试过网络搜索,但找不到类似的Core iX处理器指令。有这样的吗?
Core iX