/*
* call-seq:
* OCI8::Math.log(numeric) -> oranumber
* OCI8::Math.log(numeric, base_num) -> oranumber
*
* Returns the natural logarithm of <i>numeric</i> for one argument.
* Returns the base <i>base_num</i> logarithm of <i>numeric</i> for two arguments.
*/
static VALUE omath_log(int argc, VALUE *argv, VALUE obj)
{
OCIError *errhp = oci8_errhp;
VALUE num, base;
OCINumber n;
OCINumber b;
OCINumber r;
sword sign;
rb_scan_args(argc, argv, "11", &num, &base);
set_oci_number_from_num(&n, num, 1, errhp);
chkerr(OCINumberSign(errhp, &n, &sign));
if (sign <= 0)
rb_raise(rb_eRangeError, "nonpositive value for log");
if (NIL_P(base)) {
chkerr(OCINumberLn(errhp, &n, &r));
} else {
set_oci_number_from_num(&b, base, 1, errhp);
chkerr(OCINumberSign(errhp, &b, &sign));
if (sign <= 0)
rb_raise(rb_eRangeError, "nonpositive value for the base of log");
chkerr(OCINumberCmp(errhp, &b, &const_p1, &sign));
if (sign == 0)
rb_raise(rb_eRangeError, "base 1 for log");
chkerr(OCINumberLog(errhp, &b, &n, &r));
}
return oci8_make_ocinumber(&r, errhp);
}
/*
* call-seq:
* OCI8::Math.atan2(y, x) -> oranumber
*
* Computes the arc tangent given <i>y</i> and <i>x</i>. Returns
* -PI..PI.
*/
static VALUE omath_atan2(VALUE self, VALUE Ycoordinate, VALUE Xcoordinate)
{
OCIError *errhp = oci8_errhp;
OCINumber nY;
OCINumber nX;
OCINumber rv;
boolean is_zero;
sword sign;
set_oci_number_from_num(&nX, Xcoordinate, 1, errhp);
set_oci_number_from_num(&nY, Ycoordinate, 1, errhp);
/* check zero */
chkerr(OCINumberIsZero(errhp, &nX, &is_zero));
if (is_zero) {
chkerr(OCINumberSign(errhp, &nY, &sign));
switch (sign) {
case 0:
return INT2FIX(0); /* atan2(0, 0) => 0 or ERROR? */
case 1:
return oci8_make_ocinumber(&const_PI2, errhp); /* atan2(positive, 0) => PI/2 */
case -1:
return oci8_make_ocinumber(&const_mPI2, errhp); /* atan2(negative, 0) => -PI/2 */
}
}
/* atan2 */
chkerr(OCINumberArcTan2(errhp, &nY, &nX, &rv));
return oci8_make_ocinumber(&rv, errhp);
}
/*
* call-seq:
* onum / integer -> oranumber
* onum / numeric -> numeric
*
* Returns the result of dividing <i>onum</i> by <i>other</i>.
*/
static VALUE onum_div(VALUE lhs, VALUE rhs)
{
OCIError *errhp = oci8_errhp;
OCINumber n;
OCINumber r;
boolean is_zero;
switch (rboci8_type(rhs)) {
case T_FIXNUM:
if (rhs == INT2FIX(0)) {
rb_num_zerodiv();
}
case T_BIGNUM:
if (set_oci_number_from_num(&n, rhs, 0, errhp)) {
chkerr(OCINumberDiv(errhp, _NUMBER(lhs), &n, &r));
return oci8_make_ocinumber(&r, errhp);
}
break;
case RBOCI8_T_ORANUMBER:
chkerr(OCINumberIsZero(errhp, _NUMBER(rhs), &is_zero));
if (is_zero) {
rb_num_zerodiv();
}
chkerr(OCINumberDiv(errhp, _NUMBER(lhs), _NUMBER(rhs), &r));
return oci8_make_ocinumber(&r, errhp);
case T_FLOAT:
return rb_funcall(onum_to_f(lhs), oci8_id_div_op, 1, rhs);
case RBOCI8_T_RATIONAL:
return rb_funcall(onum_to_r(lhs), oci8_id_div_op, 1, rhs);
case RBOCI8_T_BIGDECIMAL:
return rb_funcall(onum_to_d(lhs), oci8_id_div_op, 1, rhs);
}
return rb_num_coerce_bin(lhs, rhs, oci8_id_div_op);
}
/*
* call-seq:
* onum * other -> number
*
* Returns the product of <i>onum</i> and <i>other</i>.
*/
static VALUE onum_mul(VALUE lhs, VALUE rhs)
{
OCIError *errhp = oci8_errhp;
OCINumber n;
OCINumber r;
switch (rboci8_type(rhs)) {
case T_FIXNUM:
case T_BIGNUM:
if (set_oci_number_from_num(&n, rhs, 0, errhp)) {
chkerr(OCINumberMul(errhp, _NUMBER(lhs), &n, &r));
return oci8_make_ocinumber(&r, errhp);
}
break;
case RBOCI8_T_ORANUMBER:
chkerr(OCINumberMul(errhp, _NUMBER(lhs), _NUMBER(rhs), &r));
return oci8_make_ocinumber(&r, errhp);
case T_FLOAT:
return rb_funcall(onum_to_f(lhs), oci8_id_mul_op, 1, rhs);
case RBOCI8_T_RATIONAL:
return rb_funcall(onum_to_r(lhs), oci8_id_mul_op, 1, rhs);
case RBOCI8_T_BIGDECIMAL:
return rb_funcall(onum_to_d(lhs), oci8_id_mul_op, 1, rhs);
}
return rb_num_coerce_bin(lhs, rhs, oci8_id_mul_op);
}
OCINumber *oci8_set_integer(OCINumber *result, VALUE self, OCIError *errhp)
{
OCINumber work;
set_oci_number_from_num(&work, self, 1, errhp);
chkerr(OCINumberTrunc(errhp, &work, 0, result));
return result;
}
static void bind_integer_set(oci8_bind_t *obind, void *data, void **null_structp, VALUE val)
{
OCIError *errhp = oci8_errhp;
OCINumber num;
set_oci_number_from_num(&num, val, 1, errhp);
oci_lc(OCINumberTrunc(errhp, &num, 0, (OCINumber*)data));
}
/*
* call-seq:
* OCI8::Math.log10(numeric) -> oranumber
*
* Returns the base 10 logarithm of <i>numeric</i>.
*/
static VALUE omath_log10(VALUE obj, VALUE num)
{
OCIError *errhp = oci8_errhp;
OCINumber n;
OCINumber r;
sword sign;
set_oci_number_from_num(&n, num, 1, errhp);
chkerr(OCINumberSign(errhp, &n, &sign));
if (sign <= 0)
rb_raise(rb_eRangeError, "nonpositive value for log10");
chkerr(OCINumberLog(errhp, &const_p10, &n, &r));
return oci8_make_ocinumber(&r, errhp);
}
/*
* call-seq:
* onum ** other -> oranumber
*
* Raises <i>onum</i> the <i>other</i> power.
*/
static VALUE onum_power(VALUE lhs, VALUE rhs)
{
OCIError *errhp = oci8_errhp;
OCINumber n;
OCINumber r;
if (FIXNUM_P(rhs)) {
chkerr(OCINumberIntPower(errhp, _NUMBER(lhs), FIX2INT(rhs), &r));
} else {
/* change to OCINumber */
if (!set_oci_number_from_num(&n, rhs, 0, errhp))
return rb_num_coerce_bin(lhs, rhs, id_power);
chkerr(OCINumberPower(errhp, _NUMBER(lhs), &n, &r));
}
return oci8_make_ocinumber(&r, errhp);
}
static VALUE onum_initialize(int argc, VALUE *argv, VALUE self)
{
OCIError *errhp = oci8_errhp;
VALUE val;
VALUE fmt;
VALUE nls_params;
if (rb_scan_args(argc, argv, "03", &val /* 0 */, &fmt /* nil */, &nls_params /* nil */) == 0) {
OCINumberSetZero(errhp, _NUMBER(self));
} else if (RTEST(rb_obj_is_kind_of(val, rb_cNumeric))) {
set_oci_number_from_num(_NUMBER(self), val, 1, errhp);
} else {
set_oci_number_from_str(_NUMBER(self), val, fmt, nls_params, errhp);
}
return Qnil;
}
/*
* call-seq:
* OCI8::Math.sqrt(numeric) -> oranumber
*
* Returns the non-negative square root of <i>numeric</i>.
*/
static VALUE omath_sqrt(VALUE obj, VALUE num)
{
OCIError *errhp = oci8_errhp;
OCINumber n;
OCINumber r;
sword sign;
set_oci_number_from_num(&n, num, 1, errhp);
/* check whether num is negative */
chkerr(OCINumberSign(errhp, &n, &sign));
if (sign < 0) {
errno = EDOM;
rb_sys_fail("sqrt");
}
chkerr(OCINumberSqrt(errhp, &n, &r));
return oci8_make_ocinumber(&r, errhp);
}
/*
* call-seq:
* onum % other -> oranumber
*
* Returns the modulo after division of <i>onum</i> by <i>other</i>.
*/
static VALUE onum_mod(VALUE lhs, VALUE rhs)
{
OCIError *errhp = oci8_errhp;
OCINumber n;
OCINumber r;
boolean is_zero;
/* change to OCINumber */
if (!set_oci_number_from_num(&n, rhs, 0, errhp))
return rb_num_coerce_bin(lhs, rhs, '%');
/* check whether argument is not zero. */
chkerr(OCINumberIsZero(errhp, &n, &is_zero));
if (is_zero)
rb_num_zerodiv();
/* modulo */
chkerr(OCINumberMod(errhp, _NUMBER(lhs), &n, &r));
return oci8_make_ocinumber(&r, errhp);
}
/*
* call-seq:
* onum <=> other -> -1, 0, +1
*
* Returns -1, 0, or +1 depending on whether <i>onum</i> is less than,
* equal to, or greater than <i>other</i>. This is the basis for the
* tests in <code>Comparable</code>.
*/
static VALUE onum_cmp(VALUE lhs, VALUE rhs)
{
OCIError *errhp = oci8_errhp;
OCINumber n;
sword r;
/* change to OCINumber */
if (!set_oci_number_from_num(&n, rhs, 0, errhp))
return rb_num_coerce_cmp(lhs, rhs, id_cmp);
/* compare */
chkerr(OCINumberCmp(errhp, _NUMBER(lhs), &n, &r));
if (r > 0) {
return INT2FIX(1);
} else if (r == 0) {
return INT2FIX(0);
} else {
return INT2FIX(-1);
}
}
/*
* call-seq:
* OCI8::Math.asin(x) -> oranumber
*
* Computes the arc sine of <i>x</i>. Returns 0..PI.
*/
static VALUE omath_asin(VALUE obj, VALUE num)
{
OCIError *errhp = oci8_errhp;
OCINumber n;
OCINumber r;
sword sign;
set_oci_number_from_num(&n, num, 1, errhp);
/* check upper bound */
chkerr(OCINumberCmp(errhp, &n, &const_p1, &sign));
if (sign > 0)
rb_raise(rb_eRangeError, "out of range for asin");
/* check lower bound */
chkerr(OCINumberCmp(errhp, &n, &const_m1, &sign));
if (sign < 0)
rb_raise(rb_eRangeError, "out of range for asin");
/* asin */
chkerr(OCINumberArcSin(errhp, &n, &r));
return oci8_make_ocinumber(&r, errhp);
}
OCINumber *oci8_set_ocinumber(OCINumber *result, VALUE self, OCIError *errhp)
{
set_oci_number_from_num(result, self, 1, errhp);
return result;
}
/* 1 - success, 0 - error */
static int set_oci_number_from_num(OCINumber *result, VALUE num, int force, OCIError *errhp)
{
signed long sl;
if (!RTEST(rb_obj_is_kind_of(num, rb_cNumeric)))
rb_raise(rb_eTypeError, "expect Numeric but %s", rb_class2name(CLASS_OF(num)));
if (rb_respond_to(num, id_finite_p) && !RTEST(rb_funcall(num, id_finite_p, 0))) {
rb_raise(rb_eTypeError, "cannot accept number which isn't finite.");
}
switch (rb_type(num)) {
case T_FIXNUM:
/* set from long. */
sl = NUM2LONG(num);
chkerr(OCINumberFromInt(errhp, &sl, sizeof(sl), OCI_NUMBER_SIGNED, result));
return 1;
case T_FLOAT:
/* set from double. */
oci8_dbl_to_onum(result, NUM2DBL(num), errhp);
return 1;
case T_BIGNUM:
/* change via string. */
num = rb_big2str(num, 10);
set_oci_number_from_str(result, num, Qnil, Qnil, errhp);
return 1;
}
if (RTEST(rb_obj_is_instance_of(num, cOCINumber))) {
/* OCI::Number */
chkerr(OCINumberAssign(errhp, DATA_PTR(num), result));
return 1;
}
if (rb_respond_to(num, id_split)) {
/* BigDecimal */
VALUE split = rb_funcall(num, id_split, 0);
if (TYPE(split) == T_ARRAY && RARRAY_LEN(split) == 4) {
/*
* sign, significant_digits, base, exponent = num.split
* onum = sign * "0.#{significant_digits}".to_f * (base ** exponent)
*/
VALUE *ary = RARRAY_PTR(split);
int sign;
OCINumber digits;
int exponent;
int digits_len;
OCINumber work;
/* check sign */
if (TYPE(ary[0]) != T_FIXNUM) {
goto is_not_big_decimal;
}
sign = FIX2INT(ary[0]);
/* check digits */
StringValue(ary[1]);
digits_len = RSTRING_LEN(ary[1]);
set_oci_number_from_str(&digits, ary[1], Qnil, Qnil, errhp);
/* check base */
if (TYPE(ary[2]) != T_FIXNUM || FIX2LONG(ary[2]) != 10) {
goto is_not_big_decimal;
}
/* check exponent */
if (TYPE(ary[3]) != T_FIXNUM) {
goto is_not_big_decimal;
}
exponent = FIX2INT(ary[3]);
chkerr(OCINumberShift(errhp, &digits, exponent - digits_len, &work));
if (sign >= 0) {
chkerr(OCINumberAssign(errhp, &work, result));
} else {
chkerr(OCINumberNeg(errhp, &work, result));
}
return 1;
}
}
is_not_big_decimal:
if (rb_respond_to(num, id_numerator) && rb_respond_to(num, id_denominator)) {
/* Rational */
OCINumber numerator;
OCINumber denominator;
if (set_oci_number_from_num(&numerator, rb_funcall(num, id_numerator, 0), 0, errhp) &&
set_oci_number_from_num(&denominator, rb_funcall(num, id_denominator, 0), 0, errhp)) {
chkerr(OCINumberDiv(errhp, &numerator, &denominator, result));
return 1;
}
}
if (force) {
/* change via string as a last resort. */
/* TODO: if error, raise TypeError instead of OCI::Error */
set_oci_number_from_str(result, num, Qnil, Qnil, errhp);
return 1;
}
return 0;
}
static void bind_ocinumber_set(oci8_bind_t *obind, void *data, void **null_structp, VALUE val)
{
set_oci_number_from_num((OCINumber*)data, val, 1, oci8_errhp);
}