time-to-botec

Benchmark sampling in different programming languages
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is_nan.c (915B)

      1 /**
      2 * @license Apache-2.0
      3 *
      4 * Copyright (c) 2018 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/base/assert/is_nan.h"
     20 #include <stdbool.h>
     21 
     22 /**
     23 * Tests if a double-precision floating-point numeric value is `NaN`.
     24 *
     25 * @param x       number
     26 * @return        boolean indicating if an input value is `NaN`
     27 */
     28 bool stdlib_base_is_nan( const double x ) {
     29 	return ( x != x );
     30 }