1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 /* ---- includes ----------------------------------------------------------- */ 18 19 #include "b_TensorEm/Functions.h" 20 #include "b_BasicEm/Math.h" 21 22 /* ---- related objects --------------------------------------------------- */ 23 24 /* ---- typedefs ----------------------------------------------------------- */ 25 26 /* ---- constants ---------------------------------------------------------- */ 27 28 /* ------------------------------------------------------------------------- */ 29 30 /* ========================================================================= */ 31 /* */ 32 /* ---- \ghd{ external functions } ----------------------------------------- */ 33 /* */ 34 /* ========================================================================= */ 35 36 /* ------------------------------------------------------------------------- */ 37 38 uint32 bts_absIntLog2( int32 vA ) 39 { 40 return bbs_intLog2( bbs_abs( vA ) ); 41 } 42 43 /* ------------------------------------------------------------------------- */ 44 45 uint32 bts_maxAbsIntLog2Of2( int32 v1A, int32 v2A ) 46 { 47 uint32 maxL = bbs_max( ( uint32 )bbs_abs( v1A ), ( uint32 )bbs_abs( v2A ) ); 48 return bbs_intLog2( maxL ); 49 } 50 51 /* ------------------------------------------------------------------------- */ 52 53 uint32 bts_maxAbsIntLog2Of3( int32 v1A, int32 v2A, int32 v3A ) 54 { 55 uint32 maxL = bbs_abs( v1A ); 56 maxL = bbs_max( maxL, ( uint32 )bbs_abs( v2A ) ); 57 maxL = bbs_max( maxL, ( uint32 )bbs_abs( v3A ) ); 58 return bbs_intLog2( maxL ); 59 } 60 61 /* ------------------------------------------------------------------------- */ 62 63 uint32 bts_maxAbsIntLog2Of4( int32 v1A, int32 v2A, int32 v3A, int32 v4A ) 64 { 65 uint32 maxL = bbs_abs( v1A ); 66 maxL = bbs_max( maxL, ( uint32 )bbs_abs( v2A ) ); 67 maxL = bbs_max( maxL, ( uint32 )bbs_abs( v3A ) ); 68 maxL = bbs_max( maxL, ( uint32 )bbs_abs( v4A ) ); 69 return bbs_intLog2( maxL ); 70 } 71 72 /* ------------------------------------------------------------------------- */ 73
