Presolve Utility Functions

Utilities used by multiple presolve transform objects. More...

Functions
double *	presolve_dupmajor (const double *elems, const int *indices, int length, CoinBigIndex offset, int tgt=-1)
	Duplicate a major-dimension vector; optionally omit the entry with minor index tgt. More...
void	coin_init_random_vec (double *work, int n)
	Initialize a vector with random numbers. More...

Detailed Description

Utilities used by multiple presolve transform objects.

Function Documentation

double* presolve_dupmajor	(	const double *	elems,
		const int *	indices,
		int	length,
		CoinBigIndex	offset,
		int	tgt = -1
	)

Duplicate a major-dimension vector; optionally omit the entry with minor index tgt.

Designed to copy a major-dimension vector from the paired coefficient (elems) and minor index (indices) arrays used in the standard packed matrix representation. Copies length entries starting at offset.

If tgt is specified, the entry with minor index == tgt is omitted from the copy.

void coin_init_random_vec	(	double *	work,
		int	n
	)

Initialize a vector with random numbers.