DRC: math: Replace exponential function for performance #344

Job	Run time
manifest-check	53s
build-linux (mnfst, imx8 imx8x imx8m)	4m 14s
LP64-WIP	3m 23s
build-linux (mnfst, mtl)	4m 50s
build-windows (imx8 imx8x imx8m)	6m 40s
build-linux (mnfst, lnl)	4m 19s
build-windows (mtl)	5m 42s
build-linux (mnfst, tgl tgl-h)	5m 21s
build-windows (tgl tgl-h)	6m 36s
build-linux (zmain, imx8 imx8x imx8m)	4m 2s
build-windows (-d, mtl)	5m 22s
build-linux (zmain, mtl)	4m 33s
build-linux (zmain, lnl)	3m 51s
build-linux (zmain, tgl tgl-h)	4m 42s
build-linux (-d, mnfst, mtl)	4m 2s
compare-linux-win	31s
	1h 9m 1s

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