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_bc_do_compare: function (n1, n2, use_sign, ignore_last) {
var n1ptr, n2ptr; // int
var count; // int
/* First, compare signs. */
if (use_sign && (n1.n_sign != n2.n_sign)) {
if (n1.n_sign == libbcmath.PLUS) {
return (1); /* Positive N1 > Negative N2 */
} else {
return (-1); /* Negative N1 < Positive N1 */
}
}
/* Now compare the magnitude. */
if (n1.n_len != n2.n_len) {
if (n1.n_len > n2.n_len) { /* Magnitude of n1 > n2. */
if (!use_sign || (n1.n_sign == libbcmath.PLUS)) {
return (1);
} else {
return (-1);
}
} else { /* Magnitude of n1 < n2. */
if (!use_sign || (n1.n_sign == libbcmath.PLUS)) {
return (-1);
} else {
return (1);
}
}
}
if (count !== 0) {
if (n1.n_value[n1ptr] > n2.n_value[n2ptr]) { /* Magnitude of n1 > n2. */
if (!use_sign || n1.n_sign == libbcmath.PLUS) {
return (1);
} else {
return (-1);
}
} else { /* Magnitude of n1 < n2. */
if (!use_sign || n1.n_sign == libbcmath.PLUS) {
return (-1);
} else {
return (1);
}
}
}
/* They are equal up to the last part of the equal part of the fraction. */
if (n1.n_scale != n2.n_scale) {
if (n1.n_scale > n2.n_scale) {
for (count = (n1.n_scale - n2.n_scale); count > 0; count--) {
if (n1.n_value[n1ptr++] !== 0) { /* Magnitude of n1 > n2. */
if (!use_sign || n1.n_sign == libbcmath.PLUS) {
return (1);
} else {
return (-1);
}
}
}
} else {
for (count = (n2.n_scale - n1.n_scale); count > 0; count--) {
if (n2.n_value[n2ptr++] !== 0) { /* Magnitude of n1 < n2. */
if (!use_sign || n1.n_sign == libbcmath.PLUS) {
return (-1);
} else {
return (1);
}
}
}
}
}
3.14159265 10.03.2012 18:36 # 0
bober_maniac 10.03.2012 22:18 # 0
SmackMyBitchUp 11.03.2012 17:39 # +1
TarasB 11.03.2012 18:11 # +1