repl.txt (2733B)
1 2 {{alias}}( N, x, stride ) 3 Reverses a single-precision floating-point strided array in-place. 4 5 The `N` and `stride` parameters determine which elements in `x` are accessed 6 at runtime. 7 8 Indexing is relative to the first index. To introduce an offset, use typed 9 array views. 10 11 If `N <= 0`, the function returns `x` unchanged. 12 13 Parameters 14 ---------- 15 N: integer 16 Number of indexed elements. 17 18 x: Float32Array 19 Input array. 20 21 stride: integer 22 Index increment for `x`. 23 24 Returns 25 ------- 26 x: Float32Array 27 Input array `x`. 28 29 Examples 30 -------- 31 // Standard Usage: 32 > var x = new {{alias:@stdlib/array/float32}}( [ -2.0, 1.0, 3.0, -5.0, 4.0, -1.0, -3.0 ] ); 33 > {{alias}}( x.length, x, 1 ) 34 <Float32Array>[ -3.0, -1.0, 4.0, -5.0, 3.0, 1.0, -2.0 ] 35 36 // Using `N` and `stride` parameters: 37 > x = new {{alias:@stdlib/array/float32}}( [ -2.0, 1.0, 3.0, -5.0, 4.0, -1.0, -3.0 ] ); 38 > var N = {{alias:@stdlib/math/base/special/floor}}( x.length / 2 ); 39 > {{alias}}( N, x, 2 ) 40 <Float32Array>[ 4.0, 1.0, 3.0, -5.0, -2.0, -1.0, -3.0 ] 41 42 // Using view offsets: 43 > var x0 = new {{alias:@stdlib/array/float32}}( [ 1.0, -2.0, 3.0, -4.0, 5.0, -6.0 ] ); 44 > var x1 = new {{alias:@stdlib/array/float32}}( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); 45 > N = {{alias:@stdlib/math/base/special/floor}}( x0.length / 2 ); 46 > {{alias}}( N, x1, 2 ) 47 <Float32Array>[ -6.0, 3.0, -4.0, 5.0, -2.0 ] 48 > x0 49 <Float32Array>[ 1.0, -6.0, 3.0, -4.0, 5.0, -2.0 ] 50 51 {{alias}}.ndarray( N, x, stride, offset ) 52 Reverses a single-precision floating-point strided array in-place using 53 alternative indexing semantics. 54 55 While typed array views mandate a view offset based on the underlying 56 buffer, the `offset` parameter supports indexing semantics based on a 57 starting index. 58 59 Parameters 60 ---------- 61 N: integer 62 Number of indexed elements. 63 64 x: Float32Array 65 Input array. 66 67 stride: integer 68 Index increment for `x`. 69 70 offset: integer 71 Starting index of `x`. 72 73 Returns 74 ------- 75 x: Float32Array 76 Input array `x`. 77 78 Examples 79 -------- 80 // Standard Usage: 81 > var x = new {{alias:@stdlib/array/float32}}( [ -2.0, 1.0, 3.0, -5.0, 4.0, -1.0, -3.0 ] ); 82 > {{alias}}.ndarray( x.length, x, 1, 0 ) 83 <Float32Array>[ -3.0, -1.0, 4.0, -5.0, 3.0, 1.0, -2.0 ] 84 85 // Using an index offset: 86 > x = new {{alias:@stdlib/array/float32}}( [ 1.0, -2.0, 3.0, -4.0, 5.0, -6.0 ] ); 87 > var N = {{alias:@stdlib/math/base/special/floor}}( x.length / 2 ); 88 > {{alias}}.ndarray( N, x, 2, 1 ) 89 <Float32Array>[ 1.0, -6.0, 3.0, -4.0, 5.0, -2.0 ] 90 91 See Also 92 -------- 93