56 lines
2.7 KiB
C
56 lines
2.7 KiB
C
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/*
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** Copyright 2003-2010, VisualOn, Inc.
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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/*--------------------------------------------------------------------------*
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* MATH_OP.H *
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*--------------------------------------------------------------------------*
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* Mathematical operations *
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*--------------------------------------------------------------------------*/
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#ifndef __MATH_OP_H__
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#define __MATH_OP_H__
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Word32 Isqrt( /* (o) Q31 : output value (range: 0<=val<1) */
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Word32 L_x /* (i) Q0 : input value (range: 0<=val<=7fffffff) */
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);
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void Isqrt_n(
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Word32 * frac, /* (i/o) Q31: normalized value (1.0 < frac <= 0.5) */
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Word16 * exp /* (i/o) : exponent (value = frac x 2^exponent) */
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);
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Word32 Pow2( /* (o) Q0 : result (range: 0<=val<=0x7fffffff) */
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Word16 exponant, /* (i) Q0 : Integer part. (range: 0<=val<=30) */
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Word16 fraction /* (i) Q15 : Fractionnal part. (range: 0.0<=val<1.0) */
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);
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Word32 Dot_product12( /* (o) Q31: normalized result (1 < val <= -1) */
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Word16 x[], /* (i) 12bits: x vector */
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Word16 y[], /* (i) 12bits: y vector */
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Word16 lg, /* (i) : vector length */
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Word16 * exp /* (o) : exponent of result (0..+30) */
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);
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Word32 Dot_product12_asm( /* (o) Q31: normalized result (1 < val <= -1) */
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Word16 x[], /* (i) 12bits: x vector */
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Word16 y[], /* (i) 12bits: y vector */
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Word16 lg, /* (i) : vector length */
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Word16 * exp /* (o) : exponent of result (0..+30) */
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);
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#endif //__MATH_OP_H__
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