37 lines
574 B
C
37 lines
574 B
C
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/*
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* Based on a demo in the Linux manpages.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "lib/dlfcn.h"
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int main(int argc, char * argv[]) {
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void * handle;
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double (*cosine)(double);
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char * error;
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handle = dlopen("libm.so", 0); /* TODO constants */
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if (!handle) {
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fprintf(stderr, "%s\n", dlerror());
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return 1;
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}
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/* Clear error */
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dlerror();
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cosine = (double (*)(double))dlsym(handle, "cos");
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error = dlerror();
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if (error != NULL) {
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fprintf(stderr, "%s\n", error);
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return 1;
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}
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printf("%f\n", (*cosine)(2.0));
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dlclose(handle);
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return 0;
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}
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