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 (Type *) malloc(sizeof(Type))		  New Topic  Reply to Topic
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kid

USA
20 Posts
Posted - 07/21/2002 :  5:43:11 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
What are the restrictions of the OriginC compiler on the malloc function. I've been trying to do a link list using this code
#include <origin.h>

struct spacePoints {
int index;
int xPos;
int yPos;
int zPos;
spacePoints *next;
};

void tryThisOne(void) {

spacePoints start, *node;
start.next = NULL;
node = &start;

for(int count = 0; count < 3; count++) {
node->index = count;
[Line 19] node->next = (spacePoints *) malloc( sizeof(spacePoints) );
node = node->next;
node->next = NULL;
}

printf("The size of this struct is: %d\n", sizeof(spacePoints) );

return;
}

and I get a compiler error on line 19: Error, invalid explicit cast.
Is there a limitation in the OriginC compiler, or is there something wrong in my code. I know I can get around using a link list, by using a wks object, but I'll like to know if Link Lists are sported in OriginC anyway.

Alex...

lilo

Germany
2 Posts
Posted - 12/05/2002 :  09:23:36 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
I have got a similar problem. I'm trying to build a working version of
nrutils.c from numerical recipes for Origin C and I get the same error message "Error, invalid explicit cast" in the last line cited here:
 
        #define NR_END 1
	long nrow=nrh-nrl+1;
	float **m;
	m=(float**) malloc((size_t) ((nrow+NR_END)*sizeof(float*)));

I'd really be glad if someone could tell me a way round this...
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ML

USA
63 Posts
Posted - 12/06/2002 :  11:25:53 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
quote:

I have got a similar problem. I'm trying to build a working version of
nrutils.c from numerical recipes for Origin C and I get the same error message "Error, invalid explicit cast" in the last line cited here:
 
        #define NR_END 1
	long nrow=nrh-nrl+1;
	float **m;
	m=(float**) malloc((size_t) ((nrow+NR_END)*sizeof(float*)));

I'd really be glad if someone could tell me a way round this...

The support for m = (float**)malloc() will be provided in the upcoming service release.
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Frank_H

Germany
Posts
Posted - 01/10/2006 :  1:13:33 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Is there still no typecast for structs?
Tried

Nag_Spline * spline;
spline = (Nag_Spline *) malloc(sizeof(Nag_Spline));


and got the same error as Alex (Error, invalid explicit cast) :-(

Cheers,
Frank
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easwar

USA
1965 Posts
Posted - 01/12/2006 :  09:10:35 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Frank,

This is currently not supported, but will be in the next version.

Easwar
OriginLab
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