/usr/include/spooles/Utilities/IV.h is in libspooles-dev 2.2-10build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*--------------------------------------------------------------------*/
/*
-------------------------------------------------------
purpose -- given the pair of arrays (x1[],y1[]),
create a pair of arrays (x2[],y2[]) whose
entries are pairwise chosen from (x1[],y1[])
and whose distribution is an approximation.
return value -- the size of the (x2[],y2[]) arrays
-------------------------------------------------------
*/
int
IVcompress (
int size1,
int x1[],
int y1[],
int size2,
int x2[],
int y2[]
) ;
/*--------------------------------------------------------------------*/
/*
-------------------------------
purpose -- to copy y[*] := x[*]
-------------------------------
*/
void
IVcopy (
int size,
int y[],
int x[]
) ;
/*--------------------------------------------------------------------*/
/*
-----------------------------------------------
purpose -- to fill a int vector with a value
-----------------------------------------------
*/
void
IVfill (
int size,
int y[],
int ival
) ;
/*--------------------------------------------------------------------*/
/*
------------------------------------
purpose -- to print out a int vector
------------------------------------
*/
void
IVfprintf (
FILE *fp,
int size,
int y[]
) ;
/*--------------------------------------------------------------------*/
/*
-------------------------------------------------------------------
purpose -- to write out an integer vector with eighty column lines
input --
fp -- file pointer, must be formatted and write access
size -- length of the vector
y -- integer vector
column -- present column
pierr -- pointer to int to hold return value,
should be 1 if any print was successful,
if fprintf() failed, then ierr = -1
return value -- present column
created -- 95sep22, cca
mods -- 95sep29, cca
added ierr argument to handle error returns from fprintf()
-------------------------------------------------------------------
*/
int
IVfp80 (
FILE *fp,
int size,
int y[],
int column,
int *pierr
) ;
/*--------------------------------------------------------------------*/
/*
----------------------------------------------------------
purpose -- to free the storage taken by an integer vector.
note : ivec must have been returned by IVinit
----------------------------------------------------------
*/
void
IVfree (
int y[]
) ;
/*--------------------------------------------------------------------*/
/*
-----------------------------------
purpose -- to read in an int vector
-----------------------------------
*/
int
IVfscanf (
FILE *fp,
int size,
int y[]
) ;
/*--------------------------------------------------------------------*/
/*
---------------------------------------
purpose -- to gather y[*] = x[index[*]]
---------------------------------------
*/
void
IVgather (
int size,
int y[],
int x[],
int index[]
) ;
/*--------------------------------------------------------------------*/
/*
---------------------------------------------------
purpose -- allocate a int array with size entries
and fill with value dval
return value -- a pointer to the start of the array
created : 95sep22, cca
---------------------------------------------------
*/
int *
IVinit (
int size,
int ival
) ;
/*--------------------------------------------------------------------*/
/*
---------------------------------------------------
purpose -- allocate a int array with size entries
return value -- a pointer to the start of the array
created : 95sep22, cca
---------------------------------------------------
*/
int *
IVinit2 (
int size
) ;
/*--------------------------------------------------------------------*/
/*
-------------------------------------------------------------
purpose -- allocate an int array and fill with the inverse of
y[]. note, y[] must be a permutation vector.
created : 95sep22, cca
-------------------------------------------------------------
*/
int *
IVinverse (
int size,
int y[]
) ;
/*--------------------------------------------------------------------*/
/*
------------------------------
purpose -- to permute a vector
y[index[*]] := y[*]
------------------------------
*/
void
IVinvPerm (
int size,
int y[],
int index[]
) ;
/*--------------------------------------------------------------------*/
/*
-----------------------------------------------------
purpose -- to return the first entry of maximum size,
*ploc contains its index
-----------------------------------------------------
*/
int
IVmax (
int size,
int y[],
int *ploc
) ;
/*--------------------------------------------------------------------*/
/*
---------------------------------------------------------------
purpose -- to return the first entry of maximum absolute value,
*ploc contains its index
created -- 95sep22, cca
---------------------------------------------------------------
*/
int
IVmaxabs (
int size,
int y[],
int *ploc
) ;
/*--------------------------------------------------------------------*/
/*
------------------------------------------------------
purpose -- to return the first entry of minimum value,
*ploc contains its index
created -- 95sep22, cca
------------------------------------------------------
*/
int
IVmin (
int size,
int y[],
int *ploc
) ;
/*--------------------------------------------------------------------*/
/*
---------------------------------------------------------------
purpose -- to return the first entry of minimum absolute value,
*ploc contains its index
created -- 95sep22, cca
---------------------------------------------------------------
*/
int
IVminabs (
int size,
int y[],
int *ploc
) ;
/*--------------------------------------------------------------------*/
/*
------------------------------
purpose -- to permute a vector
y[*] := y[index[*]]
------------------------------
*/
void
IVperm (
int size,
int y[],
int index[]
) ;
/*--------------------------------------------------------------------*/
/*
----------------------------------------------------
purpose -- to fill a int vector with a ramp function
----------------------------------------------------
*/
void
IVramp (
int size,
int y[],
int start,
int inc
) ;
/*--------------------------------------------------------------------*/
/*
----------------------------------------
purpose -- to scatter y[index[*]] = x[*]
----------------------------------------
*/
void
IVscatter (
int size,
int y[],
int index[],
int x[]
) ;
/*--------------------------------------------------------------------*/
/*
-----------------------------------------------
purpose -- to return the sum of a int vector
-----------------------------------------------
*/
int
IVsum (
int size,
int y[]
) ;
/*--------------------------------------------------------------------*/
/*
---------------------------------------------------
purpose -- to return the sum of the absolute values
of the entries in an int vector
---------------------------------------------------
*/
int
IVsumabs (
int size,
int y[]
) ;
/*--------------------------------------------------------------------*/
/*
--------------------------------
purpose -- to swap y[*] and x[*]
--------------------------------
*/
void
IVswap (
int size,
int y[],
int x[]
) ;
/*--------------------------------------------------------------------*/
/*
----------------------------------
purpose -- to zero a int vector
----------------------------------
*/
void
IVzero (
int size,
int y[]
) ;
/*--------------------------------------------------------------------*/
/*
-------------------------------------------------
purpose -- to permute an integer vector,
procedure uses srand48() and drand48()
input --
size -- size of the vector
ivec -- vector to be permuted
seed -- seed for the random number generator
if seed <= 0, simple return
-------------------------------------------------
*/
void
IVshuffle (
int size,
int y[],
int seed
) ;
/*--------------------------------------------------------------------*/
/*
------------------------------------------------------
locate an instance of target in the vector ivec[size].
we assume that ivec[] is sorted in ascending order
so we can use binary search to locate target.
return value --
-1 -- if target not found in ivec[]
loc -- where target = ivec[loc]
created -- 96may27, cca
------------------------------------------------------
*/
int
IVlocateViaBinarySearch (
int size,
int ivec[],
int target
) ;
/*--------------------------------------------------------------------*/
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