如图，请问在DSP_fft16x16r.c文件里的这个d2s( )是起什么作用的，在哪里能找到？
/*D2S — Truncate a 'double' to a 'short', with clamping.*/
/* ======================================================================== */
static short d2s(double d)
{
if (d >=32767.0) return32767;
if (d <= -32768.0) return -32768;
return (short)d;}
可以看一下gen_twiddle_fft16x16.c的源码
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