wehub-resource-sync
38 lines
770 B
C
Executable File
38 lines
770 B
C
Executable File
///usr/bin/env -S gcc -std=c99 -Wall -ldl -o demo "$0" -o /tmp/demo && exec /tmp/demo "$@"
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#include <dlfcn.h>
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#include <gnu/lib-names.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main(void) {
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FILE *out = fopen("/dev/null", "w");
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for (;;) {
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void *handle;
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double (*cosine)(double);
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char *error;
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double cos1, cos2;
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handle = dlopen(LIBM_SO, RTLD_LAZY);
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if (!handle) {
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fprintf(stderr, "%s\n", dlerror());
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exit(EXIT_FAILURE);
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}
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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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exit(EXIT_FAILURE);
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}
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cos1 = cosine(2.0);
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cos2 = cosine(cos1);
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fprintf(out, "%f\n", cos2);
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dlclose(handle);
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}
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}
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