Test program for UDUNITS2

udunits2_test.c

#include <stdio.h>
#include <udunits2.h>


int main(int argc, char *argv[])
{
    ut_system* unitSystem = ut_read_xml(NULL);
    ut_unit *unit0, *unit1, *unit2;
    char unit0_str[128], unit1_str[128], unit2_str[128];
    unsigned format_opts = UT_ASCII;

    /* Create two units: degrees Celsius and dimensionless. */
    unit0 = ut_parse(unitSystem, "Celsius", UT_ASCII);
    unit1 = ut_parse(unitSystem, "1", UT_ASCII);
    if ((unit0 == NULL) || (unit1 == NULL)) {
        fprintf(stderr, "error: failed to parse unit string\n");
        return 1;
    }

    /* Multiply the units together. */
    unit2 = ut_multiply(unit0, unit1);

    /* Turn all the units into strings. */
    ut_format(unit0, unit0_str, sizeof(unit0_str), format_opts);
    ut_format(unit1, unit1_str, sizeof(unit1_str), format_opts);
    ut_format(unit2, unit2_str, sizeof(unit2_str), format_opts);

    /* Print the results. */
    printf("%s x %s = %s\n", unit0_str, unit1_str, unit2_str);

    ut_free(unit0);
    ut_free(unit1);
    ut_free(unit2);

    return 0;
}