Floor() doesn't exist ??

[john.leidel]

In doing some work on a library I'm writing, I'm trying to use the
`floor()` function to get the largest integral value of a variable.
I'm compiling everything using the mpich mpicc built with gcc 4.1.0
[standard build with OpenSuse 10.1]. For some reason, it doesn't like
my floor function :

mrng.c:137: error: called object 'floor' is not a function

I've included the correct <math.h>

The code is pretty simplistic :

ran->max_num = floor( td );

both `ran->max_num` and `td` are double values.

I wrote a *very* simple test program to see if it would find 'floor'
and it worked.
#include <stdio.h>
#include <stdlib.h>
int main( int argc, char **argv )
{
printf( "%s%f\n", "FLOOR OF 2.3 :: ", floor( 2.3 ) );

return 0;
}

Any thoughts why this is happening?

 

[kingfox]

In doing some work on a library I'm writing, I'm trying to use the
`floor()` function to get the largest integral value of a variable.
I'm compiling everything using the mpich mpicc built with gcc 4.1.0
[standard build with OpenSuse 10.1]. For some reason, it doesn't like
my floor function :

mrng.c:137: error: called object 'floor' is not a function

I've included the correct <math.h>

The code is pretty simplistic :

ran->max_num = floor( td );

both `ran->max_num` and `td` are double values.

I wrote a *very* simple test program to see if it would find 'floor'
and it worked.
#include <stdio.h>
#include <stdlib.h>
int main( int argc, char **argv )
{
printf( "%s%f\n", "FLOOR OF 2.3 :: ", floor( 2.3 ) );

return 0;

}

Any thoughts why this is happening?

I think maybe you should post more code which can cause the error
message.

 

[Michael Brennan]

In doing some work on a library I'm writing, I'm trying to use the
`floor()` function to get the largest integral value of a variable.
I'm compiling everything using the mpich mpicc built with gcc 4.1.0
[standard build with OpenSuse 10.1]. For some reason, it doesn't like
my floor function :

mrng.c:137: error: called object 'floor' is not a function

I'd guess you have something declared with the name floor after
your #include <math.h> line. Could be a variable or something that
is not a function. If you turn up your warning level your compiler
will probably detect that.

I've included the correct <math.h>

The code is pretty simplistic :

ran->max_num = floor( td );

both `ran->max_num` and `td` are double values.

I wrote a *very* simple test program to see if it would find 'floor'
and it worked.
#include <stdio.h>
#include <stdlib.h>

Here you should have included math.h instead of stdlib.h

 

[Army1987]

In doing some work on a library I'm writing, I'm trying to use the
`floor()` function to get the largest integral value of a variable.
I'm compiling everything using the mpich mpicc built with gcc 4.1.0
[standard build with OpenSuse 10.1]. For some reason, it doesn't like
my floor function :

mrng.c:137: error: called object 'floor' is not a function

Maybe there's something else named 'floor' declared in an inner
block...

I've included the correct <math.h>

Some compilers don't automatically link some functions from
<math.h>. You have to tell them to do that (e.g. for gcc use the
switch -lm). But if the test below does work I don't think this is
your case.

 

[john.leidel]

`floor()` function to get the largest integral value of a variable.
I'm compiling everything using the mpich mpicc built with gcc 4.1.0
[standard build with OpenSuse 10.1]. For some reason, it doesn't like
my floor function :

mrng.c:137: error: called object 'floor' is not a function

Maybe there's something else named 'floor' declared in an inner
block...> I've included the correct <math.h>

Some compilers don't automatically link some functions from
<math.h>. You have to tell them to do that (e.g. for gcc use the
switch -lm). But if the test below does work I don't think this is
your case.

The code is pretty simplistic :

ran->max_num = floor( td );

both `ran->max_num` and `td` are double values.

I wrote a *very* simple test program to see if it would find 'floor'
and it worked.
#include <stdio.h>
#include <stdlib.h>
int main( int argc, char **argv )
{
printf( "%s%f\n", "FLOOR OF 2.3 :: ", floor( 2.3 ) );

return 0;
}

Any thoughts why this is happening?

AHA!! Sorry everyone... I had not yet consumed enough coffee this
morning... The function from which I was having trouble was defined
as :

extern MRNG *m_init_mrng( MPI_Comm RCOMM,
RNG_T type,
RNG_OPT_T options,
int mem,
double seed,
double floor,
double ceil,
int extend )

I can't use `floor` and 'ceil` as variable defs!!! ARG!!

Problem is fixed

 

[Christopher Benson-Manica]

I can't use `floor` and 'ceil` as variable defs!!! ARG!!

Don't you mean "ARGC!!!"?

(You can name variables "floor" and "ceil" if you want, just not when
you include <math.h> directly or indirectly.)