ifndef

[Michael Sgier]

Hello
I get the error below. But why and what does ifndef? Well what
is ifndef?
Many thanks and regards
Michael
error: syntax error before `(' token
#ifndef MD2SwapInt
static __inline__ Uint32 MD2SwapInt(Uint32 D) {
return((D<<24)|((D<<8)&0x00FF0000)|((D>>8)&0x0000F F00)|(D>>24));
}
#endif

[benben]

> Hello

I get the error below. But why and what does ifndef? Well what
is ifndef?
Many thanks and regards
Michael
error: syntax error before `(' token
#ifndef MD2SwapInt
static __inline__ Uint32 MD2SwapInt(Uint32 D) {
return((D<<24)|((D<<8)&0x00FF0000)|((D>>8)&0x0000F F00)|(D>>24));
}
#endif

I don't get a syntax error. What compiler are you using?

Ben

[glen stark]

"Michael Sgier" <sg***@nospam.ch> wrote in message
news:43**********************@news.sunrise.ch...

Hello
I get the error below. But why and what does ifndef? Well what
is ifndef?
Many thanks and regards
Michael
error: syntax error before `(' token
#ifndef MD2SwapInt
static __inline__ Uint32 MD2SwapInt(Uint32 D) {
return((D<<24)|((D<<8)&0x00FF0000)|((D>>8)&0x0000F F00)|(D>>24));
}
#endif

I don't know why you get the syntax error. I would suggest looking for a
missing a ; or a close parenthisis or some such from a previously included
header.

as for what is ifndef:

#ifndef is a directive that tell is the compiler "if MD2SwapInt is not
defned, then include the following code:" (if not defined).

Since you are getting an error from your code, MD2SwapInt has clearly not
been defined.

[Gianni Mariani]

Michael Sgier wrote:

Hello
I get the error below. But why and what does ifndef? Well what
is ifndef?
Many thanks and regards
Michael
error: syntax error before `(' token
#ifndef MD2SwapInt
static __inline__ Uint32 MD2SwapInt(Uint32 D) {
return((D<<24)|((D<<8)&0x00FF0000)|((D>>8)&0x0000F F00)|(D>>24));
}
#endif

What do you think the compiler would do with the following code:

int x;

#ifndef x
float x;
#endif

?

It should give an error.