The table contains the number of MCU clocks to calculate a function with a given argument(s). The main reason of a big difference between Avr2 and Avr4 is a hardware multiplication.

Function

Avr2

Avr4

__addsf3 (1.234, 5.678)

113

108

__mulsf3 (1.234, 5.678)

375

138

__divsf3 (1.234, 5.678)

466

465

acos (0.54321)

4411

2455

asin (0.54321)

4517

2556

atan (0.54321)

4710

2271

atan2 (1.234, 5.678)

5270

2857

cbrt (1.2345)

2684

2555

ceil (1.2345)

177

177

cos (1.2345)

3387

1671

cosh (1.2345)

4922

2979

exp (1.2345)

4708

2765

fdim (5.678, 1.234)

111

111

floor (1.2345)

180

180

fmax (1.234, 5.678)

39

37

fmin (1.234, 5.678)

35

35

fmod (5.678, 1.234)

131

131

frexp (1.2345, 0)

42

41

hypot (1.234, 5.678)

1341

866

ldexp (1.2345, 6)

42

42

log (1.2345)

4142

2134

log10 (1.2345)

4498

2260

modf (1.2345, 0)

433

429

pow (1.234, 5.678)

9293

5047

round (1.2345)

150

150

sin (1.2345)

3353

1653

sinh (1.2345)

4946

3003

sqrt (1.2345)

494

492

tan (1.2345)

4381

2426

tanh (1.2345)

5126

3173

trunc (1.2345)

178

178