Write a C program using threads and mutexes, whereby incr( ) is used to increment a shared float variable, decr( ) is used to decrement shared variable, double ( ) is used to double the shared variable, and halve( ) is used to halve the shared variable. Use mutex locks at appropriate places so as to synchronize the four threads. Initialize float variable to 64.0 in the beginning.

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Write a C program using threads and mutexes, whereby incr( ) is used to
increment a shared float variable, decr( ) is used to decrement shared
variable, double ( ) is used to double the shared variable, and halve( ) is
used to halve the shared variable. Use mutex locks at appropriate places so
as to synchronize the four threads. Initialize float variable to 64.0 in the
beginning. 

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