G High Performance Fortran (HPF) Library Routines on Tru64 UNIX Systems

Compaq Fortran provides as extensions the following HPF intrinsic functions:

In addition, the Compaq Parallel Software Environment (PSE) provides the HPF_LIBRARY 3hpf library routines summarized in Table G-1. PSE, available for Tru64 UNIX systems, is a separate product from Compaq Fortran.

For more information on a specific routine, see the appropriate reference page; for example, for more information on all_prefix, see all_prefix(3hpf).

Table G-1 Summary of Compaq Fortran 3hpf Routines (TU*X only)

Name  Description 
abstract_to_physical  Returns processor identification for the physical processor associated with a specified abstract processor relative to a global actual argument array. 
all_prefix  Computes a segmented logical AND scan along dimension DIM of MASK. 
all_scatter  Scatters elements of MASK to positions of the result indicated by index arrays INDX1, ..., INDXn. An element of the result is true if and only if the corresponding element of BASE and all elements of MASK scattered to that position are true. 
all_suffix  Computes a reverse, segmented logical AND scan along dimension DIM of MASK. 
any_prefix  Computes a segmented logical OR scan along dimension DIM of MASK. 
any_scatter  Scatters elements of MASK to positions of the result indicated by index arrays INDX1, ..., INDXn. An element of the result is true if and only if the corresponding element of BASE or any element of MASK scattered to that position is true. 
any_suffix  Computes a reverse, segmented logical OR scan along dimension DIM of MASK. 
copy_prefix  Computes a segmented copy scan along dimension DIM of ARRAY. 
copy_scatter  Scatters elements of ARRAY selected by MASK to positions of the result indicated by index arrays INDX1, ..., INDXn. Each element of the result is equal to one of the elements of ARRAY scattered to that position or, if there is none, to the corresponding element of BASE. 
copy_suffix  Computes a reverse, segmented copy scan along dimension DIM of ARRAY. 
count_prefix  Computes a segmented COUNT scan along dimension DIM of MASK. 
count_scatter  Scatters elements of MASK to positions of the result indicated by index arrays INDX1, ..., INDXn. Each element of the result is the sum of the corresponding element of BASE and the number of true elements of MASK scattered to that position. 
count_suffix  Computes a reverse, segmented COUNT scan along dimension DIM of MASK. 
global_alignment  Has the same interface and behavior as hpf_alignment. However, it returns information about the global HPF array actual argument associated with the local dummy argument array, rather than returning information about the local array. 
global_bounds  Returns the lower and upper bounds of the global HPF array actual argument associated with an assumed-shape local dummy array. 
global_distribution  Has the same interface and behavior as hpf_distribution. However, it returns information about the global HPF array actual argument associated with the local dummy argument array, rather than returning information about the local array. 
global_template  Has the same interface and behavior as hpf_template. However, it returns information about the global HPF array actual argument associated with the local dummy argument array, rather than returning information about the local array. 
global_to_local  Converts a set of global coordinates to an equivalent set of local coordinates. This subroutine can only be called within an EXTRINSIC(HPF_LOCAL) routine. 
global_to_physical  Converts a global reference to an array element in the HPF global actual array argument to a local reference and a Parallel Software Environment (PSE) peer number. This subroutine can only be called within an EXTRINSIC(HPF_LOCAL) routine. 
grade_down  Produces a permutation of the indices of an array, sorted by descending array element values. 
grade_up  Produces a permutation of the indices of an array, sorted by ascending array element values. 
hpf_alignment  Returns information about the correspondence of a variable and the align-target (array or template) to which it is ultimately aligned. 
hpf_distribution  Returns information about the distribution of the ultimate align-target associated with a variable. 
hpf_sync  Causes each PSE peer to wait at the point hpf_sync is called until all peers have reached that point in the program. 
hpf_template  Returns information about the ultimate align-target associated with a variable. It returns information about the variable from the template's point of view (assuming the alignment is to a template rather than to an array); hpf_alignment returns information from the variable's point of view. 
iall  Computes a bitwise logical AND reduction along dimension DIM of ARRAY. 
iall_prefix  Computes a segmented bitwise logical AND scan along dimension DIM of ARRAY. 
iall_scatter  Scatters elements of ARRAY selected by MASK to positions of the result indicated by index arrays INDX1, ..., INDXn. The nth bit of an element of the result is 1 if and only if the nth bits of the corresponding element of BASE and of the elements of ARRAY scattered to that position are all equal to 1. 
iall_suffix  Computes a reverse, segmented bitwise logical AND scan along dimension DIM of ARRAY. 
iany  Computes a bitwise logical OR reduction along dimension DIM of ARRAY. 
iany_prefix  Computes a segmented bitwise logical OR scan along dimension DIM of ARRAY. 
iany_scatter  Scatters elements of ARRAY selected by MASK to positions of the result indicated by index arrays INDX1, ..., INDXn. The nth bit of an element of the result is 1 if and only if the nth bit of the corresponding element of BASE or of any of the elements of ARRAY scattered to that position is equal to 1. 
iany_suffix  Computes a reverse, segmented bitwise logical OR scan along dimension DIM of ARRAY. 
iparity  Computes a bitwise logical exclusive OR reduction along dimension DIM of ARRAY. 
iparity_prefix  Computes a segmented bitwise logical exclusive OR scan along dimension DIM of ARRAY. 
iparity_scatter  Scatters elements of ARRAY selected by MASK to positions of the result indicated by index arrays INDX1, ..., INDXn. The nth bit of an element of the result is 1 if and only if there are an odd number of ones among the nth bits of the corresponding element of BASE and the elements of ARRAY scattered to that position. 
iparity_suffix  Computes a reverse, segmented bitwise logical exclusive OR scan along dimension DIM of ARRAY. 
leadz  Returns the number of leading zeros in an integer. 
local_to_global  Converts a set of local coordinates within a local dummy array to an equivalent set of global coordinates within the associated global HPF actual argument array. 
maxval_prefix  Computes a segmented MAXVAL scan along dimension DIM of ARRAY. 
maxval_scatter  Scatters elements of ARRAY selected by MASK to positions of the result indicated by index arrays INDX1, ..., INDXn. Each element of the result is assigned the maximum value of the corresponding element of BASE and the elements of ARRAY scattered to that position. 
maxval_suffix  Computes a reverse, segmented MAXVAL scan along dimension DIM of ARRAY. 
minval_prefix  Computes a segmented MINVAL scan along dimension DIM of ARRAY. 
minval_scatter  Scatters elements of ARRAY selected by MASK to positions of the result indicated by index arrays INDX1, ..., INDXn. Each element of the result is assigned the maximum value of the corresponding element of BASE and the elements of ARRAY scattered to that position. 
minval_suffix  Computes a reverse, segmented MINVAL scan along dimension DIM of ARRAY. 
my_processor  Returns the PSE peer number of the calling process. This function can only be called within an EXTRINSIC(HPF_LOCAL) routine. 
parity  Determines whether an odd number of values are true in MASK along dimension DIM. 
parity_prefix  Computes a segmented logical exclusive OR scan along dimension DIM of MASK. 
parity_scatter  Scatters elements of MASK to positions of the result indicated by index arrays INDX1, ..., INDXn. An element of the result is true if and only if the number of true values among the corresponding element of BASE and the elements of MASK scattered to that position is odd. 
parity_suffix  Computes a reverse, segmented logical exclusive OR scan along dimension DIM of MASK. 
physical_to_abstract  Returns coordinates for an abstract processor, relative to a global actual argument array, corresponding to a specified physical processor. 
popcnt  Returns the number of one bits in an integer.  
poppar  Returns the parity of an integer. 
product_prefix  Computes a segmented PRODUCT scan along dimension DIM of ARRAY. 
product_scatter  Scatters elements of ARRAY selected by MASK to positions of the result indicated by index arrays INDX1, ..., INDXn. Each element of the result is equal to the product of the corresponding element of BASE and the elements of ARRAY scattered to that position. 
product_suffix  Computes a reverse, segmented PRODUCT scan along dimension DIM of ARRAY. 
sum_prefix  Computes a segmented SUM scan along dimension DIM of ARRAY. 
sum_scatter  Scatters elements of ARRAY selected by MASK to positions of the result indicated by index arrays INDX1, ..., INDXn. Each element of the result is equal to the sum of the corresponding element of BASE and the elements of ARRAY scattered to that position. 
sum_suffix  Computes a reverse, segmented SUM scan along dimension DIM of ARRAY. 

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