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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061/****slbeep.c - Sleep and beep** Copyright (c) Microsoft Corporation. All rights reserved.**Purpose:* defines _sleep() and _beep()********************************************************************************/
#include <corecrt_internal.h>#include <stdlib.h>
/****void _sleep(duration) - Length of sleep**Purpose:**Entry:* unsigned long duration - length of sleep in milliseconds or* one of the following special values:** _SLEEP_MINIMUM - Sends a yield message without any delay* _SLEEP_FOREVER - Never return**Exit:* None**Exceptions:********************************************************************************/
extern "C" void __cdecl _sleep(unsigned long duration){ if (duration == 0) ++duration; Sleep(duration);}
/****void _beep(frequency, duration) - Length of sleep**Purpose:**Entry:* unsigned frequency - frequency in hertz* unsigned duration - length of beep in milliseconds**Exit:* None**Exceptions:********************************************************************************/
extern "C" void __cdecl _beep(unsigned const frequency, unsigned const duration){ Beep(frequency, duration);}