fpneg - 2023.2 English

Vitis Tutorials: AI Engine (XD100)

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2023.2 English

Output is the opposite of its input. Input can be either float or cfloat forming a 512-bit or a 1024-bit buffer (vector<float,32>, vector<cfloat,16>, vector<cfloat,16>, vector<cfloat,8>). The output is a 256-bit buffer as all the floating-point operators (vector<float,8>, vector<cfloat,4>).

vector<float,8> fpneg (vector<float,32> xbuf, int xstart, unsigned int xoffs)

for (i = 0 ; i < 8 ; i++)
  ret[i] = - xbuf[xstart + xoffs[i]]