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DSPLib_support.h程序代码中有一行#define __saturated_sub_q15 __saturated_sub_signed_short
但是在安装的DSPlib目录下我根本找不到__saturated_add_signed_short在哪有定义,
请问是什么原因
transform_ex1_fft_fixed_q15,DSPLib 中三个与fft有关的例程中都有上述symbol 但找不到对应的定义