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// Copyright 2020 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#pragma once
// The C implementation of this macro requires a C99 compound literal. In C++,
// avoid the compound literal in case -Wc99-extensions is enabled.
#ifdef __cplusplus
#define _PW_SYSTEM_CLOCK_DURATION(num_ticks) \
(pw_chrono_SystemClock_Duration{.ticks = (num_ticks)})
#else
#define _PW_SYSTEM_CLOCK_DURATION(num_ticks) \
((pw_chrono_SystemClock_Duration){.ticks = (num_ticks)})
#endif // __cplusplus
// clang-format off
// ticks_ceil = ((count * clock_period_den + time_unit_num - 1) * time_unit_den) /
// (clock_period_num * time_unit_num)
#define _PW_SYSTEM_CLOCK_TIME_TO_DURATION_CEIL( \
count, time_unit_seconds_numerator, time_unit_seconds_denominator) \
_PW_SYSTEM_CLOCK_DURATION( \
(((int64_t)(count) * PW_CHRONO_SYSTEM_CLOCK_PERIOD_SECONDS_DENOMINATOR + time_unit_seconds_numerator - 1) * time_unit_seconds_denominator) / \
(PW_CHRONO_SYSTEM_CLOCK_PERIOD_SECONDS_NUMERATOR * time_unit_seconds_numerator))
// ticks_floor = (count * clock_period_den * time_unit_den) /
// (clock_period_num * time_unit_num)
#define _PW_SYSTEM_CLOCK_TIME_TO_DURATION_FLOOR( \
count, time_unit_seconds_numerator, time_unit_seconds_denominator) \
_PW_SYSTEM_CLOCK_DURATION( \
((int64_t)(count) * PW_CHRONO_SYSTEM_CLOCK_PERIOD_SECONDS_DENOMINATOR * time_unit_seconds_denominator) / \
(PW_CHRONO_SYSTEM_CLOCK_PERIOD_SECONDS_NUMERATOR * time_unit_seconds_numerator))
#define PW_SYSTEM_CLOCK_MS_CEIL(milliseconds) \
_PW_SYSTEM_CLOCK_TIME_TO_DURATION_CEIL(milliseconds, 1000, 1)
#define PW_SYSTEM_CLOCK_S_CEIL(seconds) \
_PW_SYSTEM_CLOCK_TIME_TO_DURATION_CEIL(seconds, 1, 1)
#define PW_SYSTEM_CLOCK_MIN_CEIL(minutes) \
_PW_SYSTEM_CLOCK_TIME_TO_DURATION_CEIL(minutes, 1, 60)
#define PW_SYSTEM_CLOCK_H_CEIL(hours) \
_PW_SYSTEM_CLOCK_TIME_TO_DURATION_CEIL(hours, 1, 60 * 60)
#define PW_SYSTEM_CLOCK_MS_FLOOR(milliseconds) \
_PW_SYSTEM_CLOCK_TIME_TO_DURATION_FLOOR(milliseconds, 1000, 1)
#define PW_SYSTEM_CLOCK_S_FLOOR(seconds) \
_PW_SYSTEM_CLOCK_TIME_TO_DURATION_FLOOR(seconds, 1, 1)
#define PW_SYSTEM_CLOCK_MIN_FLOOR(minutes) \
_PW_SYSTEM_CLOCK_TIME_TO_DURATION_FLOOR(minutes, 1, 60)
#define PW_SYSTEM_CLOCK_H_FLOOR(hours) \
_PW_SYSTEM_CLOCK_TIME_TO_DURATION_FLOOR(hours, 1, 60 * 60)
// clang-format on
#define PW_SYSTEM_CLOCK_MS(milliseconds) PW_SYSTEM_CLOCK_MS_CEIL(milliseconds)
#define PW_SYSTEM_CLOCK_S(seconds) PW_SYSTEM_CLOCK_S_CEIL(seconds)
#define PW_SYSTEM_CLOCK_MIN(minutes) PW_SYSTEM_CLOCK_MIN_CEIL(minutes)
#define PW_SYSTEM_CLOCK_H(hours) PW_SYSTEM_CLOCK_H_CEIL(hours)
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