5ae777dcad
add sk_float_isinf returning non-zero if the argument is +/- infinity git-svn-id: http://skia.googlecode.com/svn/trunk@2813 2bbb7eff-a529-9590-31e7-b0007b416f81
93 lines
3.0 KiB
C
93 lines
3.0 KiB
C
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/*
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* Copyright 2006 The Android Open Source Project
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkFloatingPoint_DEFINED
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#define SkFloatingPoint_DEFINED
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#include "SkTypes.h"
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#ifdef SK_CAN_USE_FLOAT
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#include <math.h>
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#include <float.h>
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#include "SkFloatBits.h"
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// If math.h had powf(float, float), I could remove this wrapper
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static inline float sk_float_pow(float base, float exp) {
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return static_cast<float>(pow(static_cast<double>(base),
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static_cast<double>(exp)));
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}
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static inline float sk_float_copysign(float x, float y) {
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int32_t xbits = SkFloat2Bits(x);
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int32_t ybits = SkFloat2Bits(y);
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return SkBits2Float((xbits & 0x7FFFFFFF) | (ybits & 0x80000000));
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}
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#ifdef SK_BUILD_FOR_WINCE
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#define sk_float_sqrt(x) (float)::sqrt(x)
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#define sk_float_sin(x) (float)::sin(x)
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#define sk_float_cos(x) (float)::cos(x)
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#define sk_float_tan(x) (float)::tan(x)
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#define sk_float_acos(x) (float)::acos(x)
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#define sk_float_asin(x) (float)::asin(x)
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#define sk_float_atan2(y,x) (float)::atan2(y,x)
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#define sk_float_abs(x) (float)::fabs(x)
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#define sk_float_mod(x,y) (float)::fmod(x,y)
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#define sk_float_exp(x) (float)::exp(x)
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#define sk_float_log(x) (float)::log(x)
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#define sk_float_floor(x) (float)::floor(x)
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#define sk_float_ceil(x) (float)::ceil(x)
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#else
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#define sk_float_sqrt(x) sqrtf(x)
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#define sk_float_sin(x) sinf(x)
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#define sk_float_cos(x) cosf(x)
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#define sk_float_tan(x) tanf(x)
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#define sk_float_floor(x) floorf(x)
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#define sk_float_ceil(x) ceilf(x)
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#ifdef SK_BUILD_FOR_MAC
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#define sk_float_acos(x) static_cast<float>(acos(x))
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#define sk_float_asin(x) static_cast<float>(asin(x))
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#else
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#define sk_float_acos(x) acosf(x)
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#define sk_float_asin(x) asinf(x)
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#endif
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#define sk_float_atan2(y,x) atan2f(y,x)
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#define sk_float_abs(x) fabsf(x)
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#define sk_float_mod(x,y) fmodf(x,y)
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#define sk_float_exp(x) expf(x)
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#define sk_float_log(x) logf(x)
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#endif
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#ifdef SK_BUILD_FOR_WIN
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#define sk_float_isfinite(x) _finite(x)
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#define sk_float_isnan(x) _isnan(x)
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static inline int sk_float_isinf(float x) {
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int32_t bits = SkFloat2Bits(x);
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return (bits << 1) == (0xFF << 24);
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}
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#else
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#define sk_float_isfinite(x) isfinite(x)
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#define sk_float_isnan(x) isnan(x)
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#define sk_float_isinf(x) isinf(x)
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#endif
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#ifdef SK_USE_FLOATBITS
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#define sk_float_floor2int(x) SkFloatToIntFloor(x)
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#define sk_float_round2int(x) SkFloatToIntRound(x)
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#define sk_float_ceil2int(x) SkFloatToIntCeil(x)
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#else
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#define sk_float_floor2int(x) (int)sk_float_floor(x)
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#define sk_float_round2int(x) (int)sk_float_floor((x) + 0.5f)
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#define sk_float_ceil2int(x) (int)sk_float_ceil(x)
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#endif
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#endif
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#endif
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