1e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard/* 2e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** Copyright 2003-2010, VisualOn, Inc. 3e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** 4e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** Licensed under the Apache License, Version 2.0 (the "License"); 5e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** you may not use this file except in compliance with the License. 6e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** You may obtain a copy of the License at 7e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** 8e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** http://www.apache.org/licenses/LICENSE-2.0 9e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** 10e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** Unless required by applicable law or agreed to in writing, software 11e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** distributed under the License is distributed on an "AS IS" BASIS, 12e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** See the License for the specific language governing permissions and 14e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** limitations under the License. 15e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard */ 16e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 17e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 18e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard/*--------------------------------------------------------------------------* 19e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard * MATH_OP.H * 20e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard *--------------------------------------------------------------------------* 21e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard * Mathematical operations * 22e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard *--------------------------------------------------------------------------*/ 23e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 24e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard#ifndef __MATH_OP_H__ 25e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard#define __MATH_OP_H__ 26e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 27e2e838afcf03e603a41a0455846eaf9614537c16Mans RullgardWord32 Isqrt( /* (o) Q31 : output value (range: 0<=val<1) */ 28e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word32 L_x /* (i) Q0 : input value (range: 0<=val<=7fffffff) */ 29e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ); 30e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 31e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgardvoid Isqrt_n( 32e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word32 * frac, /* (i/o) Q31: normalized value (1.0 < frac <= 0.5) */ 33e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 * exp /* (i/o) : exponent (value = frac x 2^exponent) */ 34e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ); 35e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 36e2e838afcf03e603a41a0455846eaf9614537c16Mans RullgardWord32 Pow2( /* (o) Q0 : result (range: 0<=val<=0x7fffffff) */ 37e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 exponant, /* (i) Q0 : Integer part. (range: 0<=val<=30) */ 38e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 fraction /* (i) Q15 : Fractionnal part. (range: 0.0<=val<1.0) */ 39e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ); 40e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 41e2e838afcf03e603a41a0455846eaf9614537c16Mans RullgardWord32 Dot_product12( /* (o) Q31: normalized result (1 < val <= -1) */ 42e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 x[], /* (i) 12bits: x vector */ 43e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 y[], /* (i) 12bits: y vector */ 44e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 lg, /* (i) : vector length */ 45e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 * exp /* (o) : exponent of result (0..+30) */ 46e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ); 47e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 48e2e838afcf03e603a41a0455846eaf9614537c16Mans RullgardWord32 Dot_product12_asm( /* (o) Q31: normalized result (1 < val <= -1) */ 49e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 x[], /* (i) 12bits: x vector */ 50e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 y[], /* (i) 12bits: y vector */ 51e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 lg, /* (i) : vector length */ 52e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 * exp /* (o) : exponent of result (0..+30) */ 53e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ); 54e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard#endif //__MATH_OP_H__ 55e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 56