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34 lines
908 B
C
34 lines
908 B
C
/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// Naive implementation, probably room for optimization...
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double round(double d) {
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if (__builtin_floor(d) == d) {
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return d;
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}
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double half;
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if (d < 0.0) {
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if (d > -0.5) {
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return -0.0;
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} else {
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half = -0.5;
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}
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} else {
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half = 0.5;
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}
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return __builtin_floor(d + half);
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}
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