写一个同时测试annuity\annuityf\annuityl compound\compoundf\compoundl compound\compoundf\compoundl gamma_r\gamma_rf\gamma_rl j1\j1f\j1l jn\jnf\jnl lgamma_r\lgamma_rf\lgamma_rl的案例

假设我们要测试十二个不同的函数：annuity、annuityf、annuityl、compound、compoundf、compoundl、gamma_r、gamma_rf、gamma_rl、j1、j1f、j1l、jn、jnf、jnl、lgamma_r、lgamma_rf、lgamma_rl，下面是一个可能的测试案例：

#include <stdio.h>
#include <math.h>

int main() {
    double r = 0.05;
    float f = 0.05f;
    long double l = 0.05l;
    double x = 0.5;
    float y = 0.5f;
    long double z = 0.5l;
    int n = 2;

    double result1 = annuity(r, n, x);
    float result2 = annuityf(f, n, y);
    long double result3 = annuityl(l, n, z);

    double result4 = compound(r, n);
    float result5 = compoundf(f, n);
    long double result6 = compoundl(l, n);

    double result7 = gamma_r(x);
    float result8 = gamma_rf(y);
    long double result9 = gamma_rl(z);

    double result10 = j1(x);
    float result11 = j1f(y);
    long double result12 = j1l(z);

    double result13 = jn(n, x);
    float result14 = jnf(n, y);
    long double result15 = jnl(n, z);

    double result16 = lgamma_r(x);
    float result17 = lgamma_rf(y);
    long double result18 = lgamma_rl(z);

    printf("annuity(%.2lf, %d, %.2lf) = %.10lf\n", r, n, x, result1);
    printf("annuityf(%.2f, %d, %.2f) = %.10f\n", f, n, y, result2);
    printf("annuityl(%.2Lf, %d, %.2Lf) = %.10Lf\n", l, n, z, result3);

    printf("compound(%.2lf, %d) = %.10lf\n", r, n, result4);
    printf("compoundf(%.2f, %d) = %.10f\n", f, n, result5);
    printf("compoundl(%.2Lf, %d) = %.10Lf\n", l, n, result6);

    printf("gamma_r(%.2lf) = %.10lf\n", x, result7);
    printf("gamma_rf(%.2f) = %.10f\n", y, result8);
    printf("gamma_rl(%.2Lf) = %.10Lf\n", z, result9);

    printf("j1(%.2lf) = %.10lf\n", x, result10);
    printf("j1f(%.2f) = %.10f\n", y, result11);
    printf("j1l(%.2Lf) = %.10Lf\n", z, result12);

    printf("jn(%d, %.2lf) = %.10lf\n", n, x, result13);
    printf("jnf(%d, %.2f) = %.10f\n", n, y, result14);
    printf("jnl(%d, %.2Lf) = %.10Lf\n", n, z, result15);

    printf("lgamma_r(%.2lf) = %.10lf\n", x, result16);
    printf("lgamma_rf(%.2f) = %.10f\n", y, result17);
    printf("lgamma_rl(%.2Lf) = %.10Lf\n", z, result18);

    return 0;
}

在这个案例中，我们使用了三个不同的数据类型以及对应的函数：double、float、long double、annuity、compound、gamma_r、j1、jn、lgamma_r。然后，我们使用相同的输入值来测试这些函数，并将结果打印到屏幕上。在测试annuity、annuityf、annuityl、compound、compoundf、compoundl、j1、j1f、j1l、jn、jnf和jnl时，我们使用一个n值为2的参数。最后，我们返回0表示程序正常结束。

请注意，这只是一个简单的测试案例，实际情况可能会更加复杂。在实际测试中，我们需要考虑更多的因素，例如输入值的范围、边界条件、误差容忍度等等。同时，我们还需要确保我们的测试覆盖了所有可能的代码路径，以尽可能地发现潜在的错误。