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Name

qt_double_prod, qt_uint_prod, qt_int_prod - multiplies an array in parallel

Synopsis

#include <qthread/qloop.h>

double
qt_double_prod (double *array, size_t length, int checkfeb);

unsigned int
qt_uint_prod (unsigned int *array, size_t length, int checkfeb);

int
qt_int_prod (int *array, size_t length, int checkfeb);

Description

These functions take as input an array of length numbers and will return the product of those numbers. This product is computed in parallel by dividing the iterations evenly among the shepherds, using futures to restrict the parallelism to the available limits.

If checkfeb is non-zero, these functions will wait for the entries in the array to be full before multiplying them. They DO NOT check whether the array entries are properly aligned.

Return Value

The product of the first length entries of array.

See Also

qt_double_sum(3) , qt_double_max(3) , qt_double_min(3) , qt_uint_sum(3) , qt_uint_max(3) , qt_uint_min(3) , qt_int_sum(3) , qt_int_max(3) , qt_int_min(3) , qt_loop(3) , qt_loop_future(3) , qt_loop_balance(3) , qt_loop_balance_future(3) , qt_loopaccum_balance(3) , qt_loopaccum_balance_future(3)


Table of Contents