dvect.c File Reference

Contains simple functions based on the Dense_Vector struct. More...

#include "libftsh.h"

Defines
#define	ENTEREXIT   0
Functions
Dense_Vector	init_dvect_memory (unsigned int n)
void	give_dvect_memory (Dense_Vector *current, Dense_Vector *previous)

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Detailed Description

Contains simple functions based on the Dense_Vector struct.

Summary:

• init_dvect_memory allocates a block of memory.
• give_dvect_memory passes extra memory to the next Dense_Vector

Notes:

• we should add a free function

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Function Documentation

void give_dvect_memory	(	Dense_Vector *	current,
		Dense_Vector *	previous
	)

This routine sets up memory for the next Dense_Vector we wish to use. It looks at the previous Dense_Vector we used, and increments fields

INPUT: previous -- the last Dense_Vector we used

OUTPUT: current -- the Dense_Vector we wish to use next We align current->vector to the first space not used by previous->vector, and set current->max_size to account for the amount used in previous.

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Dense_Vector init_dvect_memory

(

unsigned int

n

)

This routine gets a large amount of memory for Dense_Vector's, and gives it to a single Dense_Vector to hold. This special Dense_Vector acts as a pointer to this block of memory, and also keeps track of how large this memory is.

INPUT: n -- the amount of memory to get

OUPUT: returns a Dense_Vector with

• .max_size=n
• .n_row=0
• .vector pointing to memory for n REAL's

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