[fpc-pascal] Common OpenMP syntax?
stevewilliams at kromestudios.com
Wed Jul 26 11:27:30 CEST 2006
Michael Van Canneyt wrote:
> Which is why I think that it's better to have them as local functions,
> instead of having to introduce a lot of new functions.
> Local functions are very pascal-ish. C doesn't have it, which is why they can't use it.
> Let's use the language features to their full extent.
*procedure* SubDomain (*var* x : *array of* Float;
istart : Integer;
ipoints : Integer)
i : Integer;
*for* i := 0 *to* ipoints - 1 *do*
x[istart + i] := 123.456;
*procedure* Sub (*var* x : *array of* Float);
/// Variables declared here should have /|*shared*|/ context./
/// This would include the function's parameters then.../
*procedure* SubTask(*var* x : *array of* Float);
/// Variables declared here have /|*private*|/ context./
iam : Integer;
nt : Integer;
ipoints : Integer;
iam := OMP.Get_Thread_Num; /// OMP library calls./
nt := OMP.Get_Num_Threads;
ipoints := Length (x) *div* nt; /// size of partition/
istart := iam * ipoints; /// starting array index/
*if* iam = Pred (nt) *then*
ipoints := Length (x) - istart; /// last thread may do more/
SubDomain (x, istart, ipoints);
arr = *array*[0 .. 9999] *of* Float;
*begin* / // Main program/
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