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[Chicken-users] Passing floats to and from foreign functions

From: pluijzer .
Subject: [Chicken-users] Passing floats to and from foreign functions
Date: Sun, 12 May 2013 02:14:34 +0200

Hello everybody,
I'm having trouble passing floating point numbers to and from foreign functions.

This is what I'm doing:

-- test.scm --

(require-extension easyffi)
(print ((foreign-lambda float "testGet")))
((foreign-lambda void "testSet" float) 4.0)
(print ((foreign-lambda float "testGet")))

-- wrapper.c --

float a = 5.0;
void testSet(float value) { a = value; }
float testGet(void) { return a; }

What I get is this:

> csc -X easyffi wrapper.c test.scm
> ./test

But I expected the output to be:

I'm I doing something wrong/forgetting something?
When I use integers instead of floats I do get the desired result.

Thank you in advance,

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