time-to-botec

Benchmark sampling in different programming languages
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smskrsqrt.c (2121B)

      1 /**
      2 * @license Apache-2.0
      3 *
      4 * Copyright (c) 2021 The Stdlib Authors.
      5 *
      6 * Licensed under the Apache License, Version 2.0 (the "License");
      7 * you may not use this file except in compliance with the License.
      8 * You may obtain a copy of the License at
      9 *
     10 *    http://www.apache.org/licenses/LICENSE-2.0
     11 *
     12 * Unless required by applicable law or agreed to in writing, software
     13 * distributed under the License is distributed on an "AS IS" BASIS,
     14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15 * See the License for the specific language governing permissions and
     16 * limitations under the License.
     17 */
     18 
     19 #include "stdlib/math/strided/special/smskrsqrt.h"
     20 #include "stdlib/strided/base/smskmap.h"
     21 #include "stdlib/math/base/special/rsqrtf.h"
     22 #include <stdint.h>
     23 
     24 /**
     25 * Computes the reciprocal square root for each element in a single-precision floating-point strided array `X` according to a strided mask array and assigns the results to elements in a single-precision floating-point strided array `Y`.
     26 *
     27 * @param N           number of indexed elements
     28 * @param X           input array
     29 * @param strideX     X stride length
     30 * @param Mask        mask array
     31 * @param strideMask  Mask stride length
     32 * @param Y           destination array
     33 * @param strideY     Y stride length
     34 *
     35 * @example
     36 * include <stdint.h>
     37 *
     38 * // Create an input strided array:
     39 * float x[] = { 0.0, 4.0, 9.0, 12.0, 24.0, 64.0, 81.0, 101.0 };
     40 *
     41 * // Create a mask strided array:
     42 * uint8_t m[] = { 0, 0, 1, 0, 1, 1, 0, 0 };
     43 *
     44 * // Create an output strided array:
     45 * float y[] = { 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
     46 *
     47 * // Specify the number of elements:
     48 * int64_t N = 4;
     49 *
     50 * // Specify the stride lengths:
     51 * int64_t strideX = 2;
     52 * int64_t strideM = 2;
     53 * int64_t strideY = 2;
     54 *
     55 * // Compute the results:
     56 * stdlib_strided_smskrsqrt( N, x, strideX, m, strideM, y, strideY );
     57 */
     58 void stdlib_strided_smskrsqrt( const int64_t N, const float *X, const int64_t strideX, const uint8_t *Mask, const int64_t strideMask, float *Y, const int64_t strideY ) {
     59 	stdlib_strided_smskmap( N, X, strideX, Mask, strideMask, Y, strideY, stdlib_base_rsqrtf );
     60 }