Resolved! Iam using stm32F4 discovery board to find FFT. But when i use the arm CMSIS library i am getting errors like this
D:\installed\kielpacks\ARM\CMSIS\5.8.0\CMSIS\DSP\Include\dsp/utils.h(160): error: #65: expected a ";" int32_t lo = (int32_t) ((in << 32) >> 32);D:\installed\kielpacks\ARM\CMSIS\5.8.0\CMSIS\DSP\Include\dsp/utils.h(162): error: #20: identifier "n1"...