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Scale10 - scale a number by a power of 10
Scale2 - scale a number by a power of 2
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Calling Sequence
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Scale10(x, N)
Scale2(x, N)
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Parameters
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x
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-
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numeric type
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N
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-
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integer
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Description
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The Scale10(x, N) function returns x * 10^N.
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The operation is carried out in the computation domain determined by x, and the result is a member of this computation domain. The UseHardwareFloats mode is not checked.
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This function can signal either overflow or underflow.
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If x is undefined, the result is x. If N is undefined, the result is undefined in the computation domain of x.
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If x is a software floating-point number, Scale10(x,N) just adds N to the exponent of x (that is, no multiplication is required).
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The Scale2(x, N) function returns x * 2^N.
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The operation is carried out in the computation domain determined by x, and the result is a member of this computation domain. The UseHardwareFloats mode is not checked.
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This function can signal either overflow or underflow.
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If x is undefined, the result is x. If N is undefined, the result is undefined in the computation domain of x.
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For special values, Scale2 returns the following results. Similar results are returned in the case of Scale10.
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1. Scale2(undefined, N) = undefined
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the input undefined
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2. Scale2(x, undefined) = undefined
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in the domain of x
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3. Scale2(0, infinity) = undefined
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in the domain of the first argument; signals Invalid
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4. Scale2(x, infinity) = sgn(x)*infinity
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no signal
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5. Scale2(+-infinity, -infinity) = undefined
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in the domain of the first argument; signals Invalid
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6. Scale2(+-infinity, N) = +-infinity
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7. Scale2(x, -infinity) = sgn(x)*0
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the 0 of the domain of x; no signal
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Thread Safety
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The Scale10 and Scale2 commands are thread-safe as of Maple 15.
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Examples
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Download Help Document
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