1 2 /* 3 * Copyright 2006 The Android Open Source Project 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 #ifndef SkFloatingPoint_DEFINED 11 #define SkFloatingPoint_DEFINED 12 13 #include "SkTypes.h" 14 15 #ifdef SK_CAN_USE_FLOAT 16 17 #include <math.h> 18 #include <float.h> 19 #include "SkFloatBits.h" 20 21 // If math.h had powf(float, float), I could remove this wrapper 22 static inline float sk_float_pow(float base, float exp) { 23 return static_cast<float>(pow(static_cast<double>(base), 24 static_cast<double>(exp))); 25 } 26 27 static inline float sk_float_copysign(float x, float y) { 28 int32_t xbits = SkFloat2Bits(x); 29 int32_t ybits = SkFloat2Bits(y); 30 return SkBits2Float((xbits & 0x7FFFFFFF) | (ybits & 0x80000000)); 31 } 32 33 #ifdef SK_BUILD_FOR_WINCE 34 #define sk_float_sqrt(x) (float)::sqrt(x) 35 #define sk_float_sin(x) (float)::sin(x) 36 #define sk_float_cos(x) (float)::cos(x) 37 #define sk_float_tan(x) (float)::tan(x) 38 #define sk_float_acos(x) (float)::acos(x) 39 #define sk_float_asin(x) (float)::asin(x) 40 #define sk_float_atan2(y,x) (float)::atan2(y,x) 41 #define sk_float_abs(x) (float)::fabs(x) 42 #define sk_float_mod(x,y) (float)::fmod(x,y) 43 #define sk_float_exp(x) (float)::exp(x) 44 #define sk_float_log(x) (float)::log(x) 45 #define sk_float_floor(x) (float)::floor(x) 46 #define sk_float_ceil(x) (float)::ceil(x) 47 #else 48 #define sk_float_sqrt(x) sqrtf(x) 49 #define sk_float_sin(x) sinf(x) 50 #define sk_float_cos(x) cosf(x) 51 #define sk_float_tan(x) tanf(x) 52 #define sk_float_floor(x) floorf(x) 53 #define sk_float_ceil(x) ceilf(x) 54 #ifdef SK_BUILD_FOR_MAC 55 #define sk_float_acos(x) static_cast<float>(acos(x)) 56 #define sk_float_asin(x) static_cast<float>(asin(x)) 57 #else 58 #define sk_float_acos(x) acosf(x) 59 #define sk_float_asin(x) asinf(x) 60 #endif 61 #define sk_float_atan2(y,x) atan2f(y,x) 62 #define sk_float_abs(x) fabsf(x) 63 #define sk_float_mod(x,y) fmodf(x,y) 64 #define sk_float_exp(x) expf(x) 65 #define sk_float_log(x) logf(x) 66 #endif 67 68 #ifdef SK_BUILD_FOR_WIN 69 #define sk_float_isfinite(x) _finite(x) 70 #define sk_float_isnan(x) _isnan(x) 71 static inline int sk_float_isinf(float x) { 72 int32_t bits = SkFloat2Bits(x); 73 return (bits << 1) == (0xFF << 24); 74 } 75 #else 76 #define sk_float_isfinite(x) isfinite(x) 77 #define sk_float_isnan(x) isnan(x) 78 #define sk_float_isinf(x) isinf(x) 79 #endif 80 81 #ifdef SK_USE_FLOATBITS 82 #define sk_float_floor2int(x) SkFloatToIntFloor(x) 83 #define sk_float_round2int(x) SkFloatToIntRound(x) 84 #define sk_float_ceil2int(x) SkFloatToIntCeil(x) 85 #else 86 #define sk_float_floor2int(x) (int)sk_float_floor(x) 87 #define sk_float_round2int(x) (int)sk_float_floor((x) + 0.5f) 88 #define sk_float_ceil2int(x) (int)sk_float_ceil(x) 89 #endif 90 91 #endif 92 #endif 93
