add_float_tfloat add_int_tint add_tfloat_float add_tint_int add_tnumber_tnumber div_float_tfloat div_int_tint div_tfloat_float div_tint_int div_tnumber_tnumber mult_float_tfloat mult_int_tint mult_tfloat_float mult_tint_int mult_tnumber_tnumber sub_float_tfloat sub_int_tint sub_tfloat_float sub_tint_int sub_tnumber_tnumber tfloat_derivative tfloat_exp tfloat_ln tfloat_log10 tnumber_abs tnumber_angular_difference tnumber_delta_value

tfloat_ln() Temporal * tfloat_ln ( const Temporal *  temp ) Return the natural logarithm of a double. Parameters [in] temp Temporal value @csqlfn Tfloat_ln()