repl.txt (916B)
1 2 {{alias}}( frac, exp ) 3 Multiplies a double-precision floating-point number by an integer power of 4 two; i.e., `x = frac * 2^exp`. 5 6 If `frac` equals positive or negative `zero`, `NaN`, or positive or negative 7 infinity, the function returns a value equal to `frac`. 8 9 Parameters 10 ---------- 11 frac: number 12 Fraction. 13 14 exp: number 15 Exponent. 16 17 Returns 18 ------- 19 out: number 20 Double-precision floating-point number equal to `frac * 2^exp`. 21 22 Examples 23 -------- 24 > var x = {{alias}}( 0.5, 3 ) 25 4.0 26 > x = {{alias}}( 4.0, -2 ) 27 1.0 28 > x = {{alias}}( 0.0, 20 ) 29 0.0 30 > x = {{alias}}( -0.0, 39 ) 31 -0.0 32 > x = {{alias}}( NaN, -101 ) 33 NaN 34 > x = {{alias}}( {{alias:@stdlib/constants/float64/pinf}}, 11 ) 35 Infinity 36 > x = {{alias}}( {{alias:@stdlib/constants/float64/ninf}}, -118 ) 37 -Infinity 38 39 See Also 40 -------- 41