Brian Sumner
76 lines
2.7 KiB
C
76 lines
2.7 KiB
C
/*
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Copyright (c) 2022 Advanced Micro Devices, Inc. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#ifndef HIP_INCLUDE_HIP_NVIDIA_DETAIL_HIP_ATOMICS_H
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#define HIP_INCLUDE_HIP_NVIDIA_DETAIL_HIP_ATOMICS_H
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__device__ inline float atomicMax(float* addr, float val) {
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unsigned int *uaddr = (unsigned int *)addr;
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float value = __uint_as_float(*uaddr);
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while (value < val) {
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value = __uint_as_float(atomicCAS(uaddr, __float_as_uint(value),
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__float_as_uint(val)));
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}
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return value;
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}
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__device__ inline double atomicMax(double* addr, double val) {
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unsigned long long* uaddr = (unsigned long long *)addr;
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double value = __longlong_as_double(*uaddr);
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while (value < val) {
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value = __longlong_as_double(atomicCAS(uaddr,
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__double_as_longlong(value),
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__double_as_longlong(val)));
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}
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return value;
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}
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__device__ inline float atomicMin(float* addr, float val) {
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unsigned int *uaddr = (unsigned int *)addr;
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float value = __uint_as_float(*uaddr);
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while (value > val) {
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value = __uint_as_float(atomicCAS(uaddr, __float_as_uint(value),
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__float_as_uint(val)));
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}
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return value;
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}
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__device__ inline double atomicMin(double* addr, double val) {
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unsigned long long* uaddr = (unsigned long long *)addr;
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double value = __longlong_as_double(*uaddr);
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while (value > val) {
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value = __longlong_as_double(atomicCAS(uaddr,
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__double_as_longlong(value),
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__double_as_longlong(val)));
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}
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return value;
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}
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#endif
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