19#ifndef __PASO_UTIL_H__
20#define __PASO_UTIL_H__
47int comparIndex(
const void* index1,
const void* index2);
82void update(
dim_t N,
double a,
double* x,
double b,
const double* y);
100inline void AXPY(
dim_t N,
double* x,
double a,
const double* y)
108 return (a>=0 && b>=0) || (a<=0 && b<=0);
index_t dim_t
Definition DataTypes.h:66
int index_t
type for array/matrix indices used both globally and on each rank
Definition DataTypes.h:61
boost::shared_ptr< JMPI_ > JMPI
Definition EsysMPI.h:76
void zeroes(dim_t n, double *x)
fills array x with zeroes
Definition PasoUtil.cpp:319
void scale(dim_t N, double *x, double a)
x = a*x
Definition PasoUtil.h:94
void AXPY(dim_t N, double *x, double a, const double *y)
x = x+a*y
Definition PasoUtil.h:100
double innerProduct(dim_t n, const double *x, const double *y, escript::JMPI mpiinfo)
returns the inner product of global arrays x and y
Definition PasoUtil.cpp:428
int comparIndex(const void *index1, const void *index2)
this int-comparison function is used by qsort/bsearch in various places
Definition PasoUtil.cpp:25
index_t cumsum(dim_t N, index_t *array)
calculates the cumulative sum in array and returns the total sum
Definition PasoUtil.cpp:86
index_t cumsum_maskedFalse(dim_t N, index_t *array, int *mask)
Definition PasoUtil.cpp:204
index_t iMax(dim_t N, const index_t *array)
returns the maximum value in integer array
Definition PasoUtil.cpp:65
void linearCombination(dim_t n, double *z, double a, const double *x, double b, const double *y)
Definition PasoUtil.cpp:388
bool samesign(double a, double b)
returns true if both arguments have the same sign, false otherwise
Definition PasoUtil.h:106
void applyGivensRotations(dim_t n, double *v, const double *c, const double *s)
Definition PasoUtil.cpp:536
double lsup(dim_t n, const double *x, escript::JMPI mpiinfo)
returns the global Lsup of x
Definition PasoUtil.cpp:466
bool isAny(dim_t N, const index_t *array, index_t value)
returns true if array contains value
Definition PasoUtil.cpp:30
index_t arg_max(dim_t n, dim_t *lambda)
returns the index to the largest entry in lambda
Definition PasoUtil.cpp:269
index_t cumsum_maskedTrue(dim_t N, index_t *array, int *mask)
Definition PasoUtil.cpp:139
double l2(dim_t n, const double *x, escript::JMPI mpiinfo)
returns the global L2 norm of x
Definition PasoUtil.cpp:501
void copy(dim_t N, double *out, const double *in)
out = in
Definition PasoUtil.h:88
dim_t numPositives(dim_t N, const double *x, escript::JMPI mpiInfo)
returns the number of positive values in x
Definition PasoUtil.cpp:39
void update(dim_t n, double a, double *x, double b, const double *y)
Definition PasoUtil.cpp:339
Definition BiCGStab.cpp:25
static dim_t N
Definition SparseMatrix_saveHB.cpp:37