repl.txt (2593B)
1 2 {{alias}}( N, x, stride ) 3 Computes the arithmetic mean of a single-precision floating-point strided 4 array, ignoring `NaN` values. 5 6 The `N` and `stride` parameters determine which elements in `x` are accessed 7 at runtime. 8 9 Indexing is relative to the first index. To introduce an offset, use a typed 10 array view. 11 12 If `N <= 0`, the function returns `NaN`. 13 14 If every indexed element is `NaN`, the function returns `NaN`. 15 16 Parameters 17 ---------- 18 N: integer 19 Number of indexed elements. 20 21 x: Float32Array 22 Input array. 23 24 stride: integer 25 Index increment. 26 27 Returns 28 ------- 29 out: float 30 The arithmetic mean. 31 32 Examples 33 -------- 34 // Standard Usage: 35 > var x = new {{alias:@stdlib/array/float32}}( [ 1.0, -2.0, NaN, 2.0 ] ); 36 > {{alias}}( x.length, x, 1 ) 37 ~0.3333 38 39 // Using `N` and `stride` parameters: 40 > x = new {{alias:@stdlib/array/float32}}( [ -2.0, 1.0, 1.0, -5.0, 2.0, -1.0, NaN ] ); 41 > var N = {{alias:@stdlib/math/base/special/floor}}( x.length / 2 ); 42 > var stride = 2; 43 > {{alias}}( N, x, stride ) 44 ~0.3333 45 46 // Using view offsets: 47 > var x0 = new {{alias:@stdlib/array/float32}}( [ 1.0, -2.0, 3.0, 2.0, 5.0, -1.0, NaN ] ); 48 > var x1 = new {{alias:@stdlib/array/float32}}( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); 49 > N = {{alias:@stdlib/math/base/special/floor}}( x0.length / 2 ); 50 > stride = 2; 51 > {{alias}}( N, x1, stride ) 52 ~-0.3333 53 54 {{alias}}.ndarray( N, x, stride, offset ) 55 Computes the arithmetic mean of a single-precision floating-point strided 56 array, ignoring `NaN` values and using alternative indexing semantics. 57 58 While typed array views mandate a view offset based on the underlying 59 buffer, the `offset` parameter supports indexing semantics based on a 60 starting index. 61 62 Parameters 63 ---------- 64 N: integer 65 Number of indexed elements. 66 67 x: Float32Array 68 Input array. 69 70 stride: integer 71 Index increment. 72 73 offset: integer 74 Starting index. 75 76 Returns 77 ------- 78 out: float 79 The arithmetic mean. 80 81 Examples 82 -------- 83 // Standard Usage: 84 > var x = new {{alias:@stdlib/array/float32}}( [ 1.0, -2.0, NaN, 2.0 ] ); 85 > {{alias}}.ndarray( x.length, x, 1, 0 ) 86 ~0.3333 87 88 // Using offset parameter: 89 > var x = new {{alias:@stdlib/array/float32}}( [ 1.0, -2.0, 3.0, 2.0, 5.0, -1.0, NaN ] ); 90 > var N = {{alias:@stdlib/math/base/special/floor}}( x.length / 2 ); 91 > {{alias}}.ndarray( N, x, 2, 1 ) 92 ~-0.3333 93 94 See Also 95 -------- 96