_CIatan2_CIatan2

计算 x / y 的反正切值,其中 xy 是堆栈顶部的值。Calculates the arctangent of x / y where x and y are values on the top of the stack.

语法Syntax

void __cdecl _CIatan2();  

备注Remarks

此版本的 atan2 函数具有编译器理解的专用化调用约定。This version of the atan2 function has a specialized calling convention that the compiler understands. 它将加快执行的速度,因为它可防止生成副本和帮助注册表分配。It speeds up the execution because it prevents copies from being generated and helps with register allocation.

生成的值被将被推送到堆栈顶部。The resulting value is pushed onto the top of the stack.

要求Requirements

平台:x86Platform: x86

另请参阅See Also

按字母顺序的函数参考 Alphabetical Function Reference
atan、atanf、atanl、atan2、atan2f、atan2latan, atanf, atanl, atan2, atan2f, atan2l