1 /* 2 * Copyright (C) 2006 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 #ifndef SkFloatingPoint_DEFINED 18 #define SkFloatingPoint_DEFINED 19 20 #include "SkTypes.h" 21 22 #ifdef SK_CAN_USE_FLOAT 23 24 #include <math.h> 25 #include <float.h> 26 #include "SkFloatBits.h" 27 28 // If math.h had powf(float, float), I could remove this wrapper 29 static inline float sk_float_pow(float base, float exp) { 30 return static_cast<float>(pow(static_cast<double>(base), 31 static_cast<double>(exp))); 32 } 33 34 static inline float sk_float_copysign(float x, float y) { 35 int32_t xbits = SkFloat2Bits(x); 36 int32_t ybits = SkFloat2Bits(y); 37 return SkBits2Float((xbits & 0x7FFFFFFF) | (ybits & 0x80000000)); 38 } 39 40 #ifdef SK_BUILD_FOR_WINCE 41 #define sk_float_sqrt(x) (float)::sqrt(x) 42 #define sk_float_sin(x) (float)::sin(x) 43 #define sk_float_cos(x) (float)::cos(x) 44 #define sk_float_tan(x) (float)::tan(x) 45 #define sk_float_acos(x) (float)::acos(x) 46 #define sk_float_asin(x) (float)::asin(x) 47 #define sk_float_atan2(y,x) (float)::atan2(y,x) 48 #define sk_float_abs(x) (float)::fabs(x) 49 #define sk_float_mod(x,y) (float)::fmod(x,y) 50 #define sk_float_exp(x) (float)::exp(x) 51 #define sk_float_log(x) (float)::log(x) 52 #define sk_float_floor(x) (float)::floor(x) 53 #define sk_float_ceil(x) (float)::ceil(x) 54 #else 55 #define sk_float_sqrt(x) sqrtf(x) 56 #define sk_float_sin(x) sinf(x) 57 #define sk_float_cos(x) cosf(x) 58 #define sk_float_tan(x) tanf(x) 59 #define sk_float_floor(x) floorf(x) 60 #define sk_float_ceil(x) ceilf(x) 61 #ifdef SK_BUILD_FOR_MAC 62 #define sk_float_acos(x) static_cast<float>(acos(x)) 63 #define sk_float_asin(x) static_cast<float>(asin(x)) 64 #else 65 #define sk_float_acos(x) acosf(x) 66 #define sk_float_asin(x) asinf(x) 67 #endif 68 #define sk_float_atan2(y,x) atan2f(y,x) 69 #define sk_float_abs(x) fabsf(x) 70 #define sk_float_mod(x,y) fmodf(x,y) 71 #define sk_float_exp(x) expf(x) 72 #define sk_float_log(x) logf(x) 73 #define sk_float_isNaN(x) _isnan(x) 74 #endif 75 76 #ifdef SK_USE_FLOATBITS 77 #define sk_float_floor2int(x) SkFloatToIntFloor(x) 78 #define sk_float_round2int(x) SkFloatToIntRound(x) 79 #define sk_float_ceil2int(x) SkFloatToIntCeil(x) 80 #else 81 #define sk_float_floor2int(x) (int)sk_float_floor(x) 82 #define sk_float_round2int(x) (int)sk_float_floor((x) + 0.5f) 83 #define sk_float_ceil2int(x) (int)sk_float_ceil(x) 84 #endif 85 86 #endif 87 #endif 88
