/* java.lang.Math -- common mathematical functions, native allowed
- Copyright (C) 1998, 2001, 2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 1998, 2001, 2002, 2003, 2006 Free Software Foundation, Inc.
This file is part of GNU Classpath.
/**
* <p>
+ * Take a cube root. If the argument is <code>NaN</code>, an infinity or
+ * zero, then the original value is returned. The returned result is
+ * within 1 ulp of the exact result. For a finite value, <code>x</code>,
+ * the cube root of <code>-x</code> is equal to the negation of the cube root
+ * of <code>x</code>.
+ * </p>
+ * <p>
+ * For a square root, use <code>sqrt</code>. For other roots, use
+ * <code>pow(a, 1 / rootNumber)</code>.
+ * </p>
+ *
+ * @param a the numeric argument
+ * @return the cube root of the argument
+ * @see #sqrt(double)
+ * @see #pow(double, double)
+ * @since 1.5
+ */
+ public static native double cbrt(double a);
+
+ /**
+ * <p>
+ * Returns the hyperbolic cosine of the given value. For a value,
+ * <code>x</code>, the hyperbolic cosine is <code>(e<sup>x</sup> +
+ * e<sup>-x</sup>)/2</code>
+ * with <code>e</code> being <a href="#E">Euler's number</a>. The returned
+ * result is within 2.5 ulps of the exact result.
+ * </p>
+ * <p>
+ * If the supplied value is <code>NaN</code>, then the original value is
+ * returned. For either infinity, positive infinity is returned.
+ * The hyperbolic cosine of zero is 1.0.
+ * </p>
+ *
+ * @param a the numeric argument
+ * @return the hyperbolic cosine of <code>a</code>.
+ * @since 1.5
+ */
+ public static native double cosh(double a);
+
+ /**
+ * <p>
+ * Returns <code>e<sup>a</sup> - 1. For values close to 0, the
+ * result of <code>expm1(a) + 1</code> tend to be much closer to the
+ * exact result than simply <code>exp(x)</code>. The result is within
+ * 1 ulp of the exact result, and results are semi-monotonic. For finite
+ * inputs, the returned value is greater than or equal to -1.0. Once
+ * a result enters within half a ulp of this limit, the limit is returned.
+ * </p>
+ * <p>
+ * For <code>NaN</code>, positive infinity and zero, the original value
+ * is returned. Negative infinity returns a result of -1.0 (the limit).
+ * </p>
+ *
+ * @param a the numeric argument
+ * @return <code>e<sup>a</sup> - 1</code>
+ * @since 1.5
+ */
+ public static native double expm1(double a);
+
+ /**
+ * <p>
+ * Returns the hypotenuse, <code>a<sup>2</sup> + b<sup>2</sup></code>,
+ * without intermediate overflow or underflow. The returned result is
+ * within 1 ulp of the exact result. If one parameter is held constant,
+ * then the result in the other parameter is semi-monotonic.
+ * </p>
+ * <p>
+ * If either of the arguments is an infinity, then the returned result
+ * is positive infinity. Otherwise, if either argument is <code>NaN</code>,
+ * then <code>NaN</code> is returned.
+ * </p>
+ *
+ * @param a the first parameter.
+ * @param b the second parameter.
+ * @return the hypotenuse matching the supplied parameters.
+ * @since 1.5
+ */
+ public static native double hypot(double a, double b);
+
+ /**
+ * <p>
* Returns the base 10 logarithm of the supplied value. The returned
* result is within 1 ulp of the exact result, and the results are
* semi-monotonic.
/**
* <p>
+ * Returns the natural logarithm resulting from the sum of the argument,
+ * <code>a</code> and 1. For values close to 0, the
+ * result of <code>log1p(a)</code> tend to be much closer to the
+ * exact result than simply <code>log(1.0+a)</code>. The returned
+ * result is within 1 ulp of the exact result, and the results are
+ * semi-monotonic.
+ * </p>
+ * <p>
+ * Arguments of either <code>NaN</code> or less than -1 return
+ * <code>NaN</code>. An argument of positive infinity or zero
+ * returns the original argument. Negative infinity is returned from an
+ * argument of -1.
+ * </p>
+ *
+ * @param a the numeric argument.
+ * @return the natural logarithm of <code>a</code> + 1.
+ * @since 1.5
+ */
+ public static native double log1p(double a);
+
+ /**
+ * <p>
* Returns the sign of the argument as follows:
* </p>
* <ul>
}
/**
+ * <p>
+ * Returns the hyperbolic sine of the given value. For a value,
+ * <code>x</code>, the hyperbolic sine is <code>(e<sup>x</sup> -
+ * e<sup>-x</sup>)/2</code>
+ * with <code>e</code> being <a href="#E">Euler's number</a>. The returned
+ * result is within 2.5 ulps of the exact result.
+ * </p>
+ * <p>
+ * If the supplied value is <code>NaN</code>, an infinity or a zero, then the
+ * original value is returned.
+ * </p>
+ *
+ * @param a the numeric argument
+ * @return the hyperbolic sine of <code>a</code>.
+ * @since 1.5
+ */
+ public static native double sinh(double a);
+
+ /**
+ * <p>
+ * Returns the hyperbolic tangent of the given value. For a value,
+ * <code>x</code>, the hyperbolic tangent is <code>(e<sup>x</sup> -
+ * e<sup>-x</sup>)/(e<sup>x</sup> + e<sup>-x</sup>)</code>
+ * (i.e. <code>sinh(a)/cosh(a)</code>)
+ * with <code>e</code> being <a href="#E">Euler's number</a>. The returned
+ * result is within 2.5 ulps of the exact result. The absolute value
+ * of the exact result is always less than 1. Computed results are thus
+ * less than or equal to 1 for finite arguments, with results within
+ * half a ulp of either positive or negative 1 returning the appropriate
+ * limit value (i.e. as if the argument was an infinity).
+ * </p>
+ * <p>
+ * If the supplied value is <code>NaN</code> or zero, then the original
+ * value is returned. Positive infinity returns +1.0 and negative infinity
+ * returns -1.0.
+ * </p>
+ *
+ * @param a the numeric argument
+ * @return the hyperbolic tangent of <code>a</code>.
+ * @since 1.5
+ */
+ public static native double tanh(double a);
+
+ /**
* Return the ulp for the given double argument. The ulp is the
* difference between the argument and the next larger double. Note
* that the sign of the double argument is ignored, that is,
-/* Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation
+/* Copyright (C) 1998, 1999, 2000, 2002, 2006 Free Software Foundation
This file is part of libgcj.
return (jdouble)::log10((double)x);
}
+jdouble java::lang::Math::cbrt(jdouble x)
+{
+ return (jdouble)::cbrt((double)x);
+}
+
+jdouble java::lang::Math::cosh(jdouble x)
+{
+ return (jdouble)::cosh((double)x);
+}
+
+jdouble java::lang::Math::expm1(jdouble x)
+{
+ return (jdouble)::expm1((double)x);
+}
+
+jdouble java::lang::Math::hypot(jdouble x, jdouble y)
+{
+ return (jdouble)::hypot((double)x, (double)y);
+}
+
+jdouble java::lang::Math::log1p(jdouble x)
+{
+ return (jdouble)::log1p((double)x);
+}
+
+jdouble java::lang::Math::sinh(jdouble x)
+{
+ return (jdouble)::sinh((double)x);
+}
+
+jdouble java::lang::Math::tanh(jdouble x)
+{
+ return (jdouble)::tanh((double)x);
+}
+
static inline int
floatToIntBits (jfloat value)
{
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