package thermocouple import ( "th7/data/thermocouple" ) const ( S_MAX_C = 1768.1 S_MIN_C = -50.0 S_MAX_UV = 18693.0 S_MIN_UV = -235.0 ) func s_c_to_uv(c float64) (float64, error) { if c < S_MIN_C || c > S_MAX_C { return 0, thermocouple.ErrC } var c0, c1, c2, c3, c4, c5, c6, c7, c8, E float64 if c < 1064.18 { c0 = 0.0 c1 = 5.40313308631 c2 = 1.25934289740e-2 c3 = -2.32477968689e-5 c4 = 3.22028823036e-8 c5 = -3.31465196389e-11 c6 = 2.55744251786e-14 c7 = -1.25068871393e-17 c8 = 2.71443176145e-21 } else if c < 1664.5 { c0 = 1.32900445085e3 c1 = 3.34509311344 c2 = 6.45805192818e-3 c3 = -1.64856259209e-6 c4 = 1.29989605174e-11 c5 = 0.0 c6 = 0.0 c7 = 0.0 c8 = 0.0 } else { c0 = 1.46628232636e5 c1 = -2.58430516752e2 c2 = 1.63693574641e-1 c3 = -3.30439046987e-5 c4 = -9.43223690612e-12 c5 = 0.0 c6 = 0.0 c7 = 0.0 c8 = 0.0 } E = c0 + c*(c1+c*(c2+c*(c2+c*(c3+c*(c4+c*(c5+c*(c6+c*(c7+c*(c8))))))))) return E, nil } func s_uv_to_c(uv float64) (float64, error) { if uv < S_MIN_UV || uv > S_MAX_UV { return 0, thermocouple.ErrUV } var c0, c1, c2, c3, c4, c5, c6, c7, c8, c9, T float64 if uv < 1874.0 { c0 = 0.0 c1 = 1.84949460e-1 c2 = -8.00504062e-5 c3 = 1.02237430e-7 c4 = -1.52248592e-10 c5 = 1.88821343e-13 c6 = -1.59085941e-16 c7 = 8.23027890e-20 c8 = -2.34181944e-23 c9 = 2.79786260e-27 } else if uv < 11950.0 { c0 = 1.291507177e1 c1 = 1.466298863e-1 c2 = -1.534713402e-5 c3 = 3.145945973e-9 c4 = -4.163257839e-13 c5 = 3.187963771e-17 c6 = -1.291637500e-21 c7 = 2.183475087e-26 c8 = -1.447379511e-31 c9 = 8.211272125e-36 } else if uv < 17536.0 { c0 = -8.087801117e1 c1 = 1.621573104e-1 c2 = -8.536869453e-6 c3 = 4.719686453e-10 c4 = -1.441693666e-14 c5 = 2.081618890e-19 c6 = 0.0 c7 = 0.0 c8 = 0.0 c9 = 0.0 } else { c0 = 5.333875126e4 c1 = -1.235892298e1 c2 = 1.092657613e-3 c3 = -4.265693686e-8 c4 = 6.247205420e-13 c5 = 0.0 c6 = 0.0 c7 = 0.0 c8 = 0.0 c9 = 0.0 } T = c0 + uv*(c1+uv*(c2+uv*(c3+uv*(c4+uv*(c5+uv*(c6+uv*(c7+uv*(c8+uv*(c9))))))))) return T, nil }