使用MPIR(GMP)库将mpf_t值保存到文件

我试图将我的号码保存在文件中,但程序一直崩溃:

include stdio.h
include mpir.h

int main(void){

mpf_set_default_prec(32); //Default precision for floating points

mpf_t my_number;
mpf_init_set_str(my_number, "5.12345e0", 10); //Set my_number to 5.123 with decimal base (10)

FILE *f;
f = fopen("some.txt", "w");

gmp_printf("Printed number to screen: %.*Ff \n", 32, my_number);

//Everything works until I try to save it to file:

gmp_fprintf(f, "My saved number is:  %.*Ff \n", 32, my_number);

fclose(f);

return 0;
}

我尝试了:

gmp_fscanf(f,“%f”,&zbroj)

mpz输出str(f,10,zbroj)

sprintf(f,“%f”,zbroj)