Module: OCI8::Math
- Defined in:
- ext/oci8/ocinumber.c
Constant Summary collapse
- PI =
The ratio of the circumference of a circle to its diameter.
obj_PI
Class Method Summary collapse
-
.OCI8::Math.acos(x) ⇒ Object
Computes the arc cosine of x.
-
.OCI8::Math.asin(x) ⇒ Object
Computes the arc sine of x.
-
.OCI8::Math.atan(x) ⇒ Object
Computes the arc tangent of x.
-
.OCI8::Math.atan2(y, x) ⇒ Object
Computes the arc tangent given y and x.
-
.OCI8::Math.cos(x) ⇒ Object
Computes the cosine of x (expressed in radians).
-
.OCI8::Math.cosh(x) ⇒ Object
Computes the hyperbolic cosine of x (expressed in radians).
-
.OCI8::Math.exp(x) ⇒ Object
Returns e**x.
-
.log(*args) ⇒ Object
Returns the natural logarithm of numeric for one argument.
-
.OCI8::Math.log10(numeric) ⇒ Object
Returns the base 10 logarithm of numeric.
-
.OCI8::Math.sin(x) ⇒ Object
Computes the sine of x (expressed in radians).
-
.OCI8::Math.sinh(x) ⇒ Object
Computes the hyperbolic sine of x (expressed in radians).
-
.OCI8::Math.sqrt(numeric) ⇒ Object
Returns the non-negative square root of numeric.
-
.OCI8::Math.tan(x) ⇒ Object
Returns the tangent of x (expressed in radians).
-
.OCI8::Math.tanh ⇒ Object
Computes the hyperbolic tangent of x (expressed in radians).
Class Method Details
.OCI8::Math.acos(x) ⇒ Object
Computes the arc cosine of x. Returns 0..PI.
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# File 'ext/oci8/ocinumber.c', line 408
static VALUE omath_acos(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 */
oci_lc(OCINumberCmp(errhp, &n, &const_p1, &sign));
if (sign > 0)
rb_raise(rb_eRangeError, "out of range for acos");
/* check lower bound */
oci_lc(OCINumberCmp(errhp, &n, &const_m1, &sign));
if (sign < 0)
rb_raise(rb_eRangeError, "out of range for acos");
/* acos */
oci_lc(OCINumberArcCos(errhp, &n, &r));
return oci8_make_ocinumber(&r, errhp);
}
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.OCI8::Math.asin(x) ⇒ Object
Computes the arc sine of x. Returns 0..PI.
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# File 'ext/oci8/ocinumber.c', line 435
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 */
oci_lc(OCINumberCmp(errhp, &n, &const_p1, &sign));
if (sign > 0)
rb_raise(rb_eRangeError, "out of range for asin");
/* check lower bound */
oci_lc(OCINumberCmp(errhp, &n, &const_m1, &sign));
if (sign < 0)
rb_raise(rb_eRangeError, "out of range for asin");
/* asin */
oci_lc(OCINumberArcSin(errhp, &n, &r));
return oci8_make_ocinumber(&r, errhp);
}
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.OCI8::Math.atan(x) ⇒ Object
Computes the arc tangent of x. Returns -PI/2 .. PI/2.
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# File 'ext/oci8/ocinumber.c', line 462
static VALUE omath_atan(VALUE obj, VALUE num)
{
OCIError *errhp = oci8_errhp;
OCINumber n;
OCINumber r;
oci_lc(OCINumberArcTan(errhp, TO_OCINUM(&n, num, errhp), &r));
return oci8_make_ocinumber(&r, errhp);
}
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.OCI8::Math.atan2(y, x) ⇒ Object
Computes the arc tangent given y and x. Returns -PI..PI.
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# File 'ext/oci8/ocinumber.c', line 323
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 */
oci_lc(OCINumberIsZero(errhp, &nX, &is_zero));
if (is_zero) {
oci_lc(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 */
oci_lc(OCINumberArcTan2(errhp, &nY, &nX, &rv));
return oci8_make_ocinumber(&rv, errhp);
}
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.OCI8::Math.cos(x) ⇒ Object
Computes the cosine of x (expressed in radians). Returns -1..1.
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# File 'ext/oci8/ocinumber.c', line 359
static VALUE omath_cos(VALUE obj, VALUE radian)
{
OCIError *errhp = oci8_errhp;
OCINumber r;
OCINumber rv;
oci_lc(OCINumberCos(errhp, TO_OCINUM(&r, radian, errhp), &rv));
return oci8_make_ocinumber(&rv, errhp);
}
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.OCI8::Math.cosh(x) ⇒ Object
Computes the hyperbolic cosine of x (expressed in radians).
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# File 'ext/oci8/ocinumber.c', line 478
static VALUE omath_cosh(VALUE obj, VALUE num)
{
OCIError *errhp = oci8_errhp;
OCINumber n;
OCINumber r;
oci_lc(OCINumberHypCos(errhp, TO_OCINUM(&n, num, errhp), &r));
return oci8_make_ocinumber(&r, errhp);
}
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.OCI8::Math.exp(x) ⇒ Object
Returns e**x.
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# File 'ext/oci8/ocinumber.c', line 528
static VALUE omath_exp(VALUE obj, VALUE num)
{
OCIError *errhp = oci8_errhp;
OCINumber n;
OCINumber r;
oci_lc(OCINumberExp(errhp, TO_OCINUM(&n, num, errhp), &r));
return oci8_make_ocinumber(&r, errhp);
}
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.OCI8::Math.log(numeric) ⇒ Object .OCI8::Math.log(numeric, base_num) ⇒ Object
Returns the natural logarithm of numeric for one argument. Returns the base base_num logarithm of numeric for two arguments.
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# File 'ext/oci8/ocinumber.c', line 546
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);
oci_lc(OCINumberSign(errhp, &n, &sign));
if (sign <= 0)
rb_raise(rb_eRangeError, "nonpositive value for log");
if (NIL_P(base)) {
oci_lc(OCINumberLn(errhp, &n, &r));
} else {
set_oci_number_from_num(&b, base, 1, errhp);
oci_lc(OCINumberSign(errhp, &b, &sign));
if (sign <= 0)
rb_raise(rb_eRangeError, "nonpositive value for the base of log");
oci_lc(OCINumberCmp(errhp, &b, &const_p1, &sign));
if (sign == 0)
rb_raise(rb_eRangeError, "base 1 for log");
oci_lc(OCINumberLog(errhp, &b, &n, &r));
}
return oci8_make_ocinumber(&r, errhp);
}
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.OCI8::Math.log10(numeric) ⇒ Object
Returns the base 10 logarithm of numeric.
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# File 'ext/oci8/ocinumber.c', line 581
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);
oci_lc(OCINumberSign(errhp, &n, &sign));
if (sign <= 0)
rb_raise(rb_eRangeError, "nonpositive value for log10");
oci_lc(OCINumberLog(errhp, &const_p10, &n, &r));
return oci8_make_ocinumber(&r, errhp);
}
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.OCI8::Math.sin(x) ⇒ Object
Computes the sine of x (expressed in radians). Returns -1..1.
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# File 'ext/oci8/ocinumber.c', line 376
static VALUE omath_sin(VALUE obj, VALUE radian)
{
OCIError *errhp = oci8_errhp;
OCINumber r;
OCINumber rv;
oci_lc(OCINumberSin(errhp, TO_OCINUM(&r, radian, errhp), &rv));
return oci8_make_ocinumber(&rv, errhp);
}
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.OCI8::Math.sinh(x) ⇒ Object
Computes the hyperbolic sine of x (expressed in radians).
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# File 'ext/oci8/ocinumber.c', line 495
static VALUE omath_sinh(VALUE obj, VALUE num)
{
OCIError *errhp = oci8_errhp;
OCINumber n;
OCINumber r;
oci_lc(OCINumberHypSin(errhp, TO_OCINUM(&n, num, errhp), &r));
return oci8_make_ocinumber(&r, errhp);
}
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.OCI8::Math.sqrt(numeric) ⇒ Object
Returns the non-negative square root of numeric.
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# File 'ext/oci8/ocinumber.c', line 602
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 */
oci_lc(OCINumberSign(errhp, &n, &sign));
if (sign < 0) {
errno = EDOM;
rb_sys_fail("sqrt");
}
oci_lc(OCINumberSqrt(errhp, &n, &r));
return oci8_make_ocinumber(&r, errhp);
}
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.OCI8::Math.tan(x) ⇒ Object
Returns the tangent of x (expressed in radians).
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# File 'ext/oci8/ocinumber.c', line 392
static VALUE omath_tan(VALUE obj, VALUE radian)
{
OCIError *errhp = oci8_errhp;
OCINumber r;
OCINumber rv;
oci_lc(OCINumberTan(errhp, TO_OCINUM(&r, radian, errhp), &rv));
return oci8_make_ocinumber(&rv, errhp);
}
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.OCI8::Math.tanh ⇒ Object
Computes the hyperbolic tangent of x (expressed in radians).
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# File 'ext/oci8/ocinumber.c', line 512
static VALUE omath_tanh(VALUE obj, VALUE num)
{
OCIError *errhp = oci8_errhp;
OCINumber n;
OCINumber r;
oci_lc(OCINumberHypTan(errhp, TO_OCINUM(&n, num, errhp), &r));
return oci8_make_ocinumber(&r, errhp);
}
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