smskfloor.c (2110B)
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/smskfloor.h" 20 #include "stdlib/strided/base/smskmap.h" 21 #include "stdlib/math/base/special/floorf.h" 22 #include <stdint.h> 23 24 /** 25 * Rounds each element in a single-precision floating-point strided array `X` toward negative infinity 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[] = { 1.1, 2.5, -3.5, 4.0, -5.9, 6.4, -7.0, 8.2 }; 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_smskfloor( N, x, strideX, m, strideM, y, strideY ); 57 */ 58 void stdlib_strided_smskfloor( 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_floorf ); 60 }