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@@ -203,10 +203,24 @@ limitations under the License.
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 + (double) sqrt: (double) x;
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 /*! Get the square of a number. */
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 + (double) square: (double) x;
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+/*! Get the cubed root of a number. */
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++ (double) cbrt: (double) x;
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 /*! Get the cosine of an angle. */
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 + (double) cos: (double) x;
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 /*! Get the sine of an angle. */
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 + (double) sin: (double) x;
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+/*! Get the largest integral value that is not greater than x.*/
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++ (double) floor: (double) x;
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+/*! Get the smallest integral value that is greater than or equal to x.*/
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++ (double) ceil: (double) x;
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+/*! Get the integral value nearest to x by always rounding half-way cases away from zero. */
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++ (double) round: (double) x;
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+/*! Raise x to the power of y */
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++ (double) raiseNumber: (double) x toPower: (double) y;
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+/*! Get the qouteint of x divided by y as an integer */
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++ (int) integerDivide:(int) x by:(int) y;
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+/*! Get the remainder of x divided by y as an integer */
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++ (int) integerMod:(int) x by:(int) y;
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 /*! Get a random integer. */
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 + (long) random;
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 /*! Seed the random number generator. */