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[Chicken-users] Passing floats to and from foreign functions
From
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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
-1080529876.0
-1080533140.0
But I expected the output to be:
4.0
5.0
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,
Righard
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[Chicken-users] Passing floats to and from foreign functions
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pluijzer .
<=
Re: [Chicken-users] Passing floats to and from foreign functions
,
John Cowan
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2013/05/11
Re: [Chicken-users] Passing floats to and from foreign functions
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Jim Ursetto
,
2013/05/11
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