1/*
2 * Copyright (C) 2011-2013 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// exports unavailable mathlib functions to compat lib
18
19#ifdef RS_COMPATIBILITY_LIB
20
21typedef unsigned int uint32_t;
22typedef int int32_t;
23
24extern uint32_t SC_abs_i32(int32_t v);
25uint32_t __attribute__((overloadable)) abs(int32_t v) {return SC_abs_i32(v);}
26
27#define IMPORT_F32_FN_F32(func)                                         \
28    extern float SC_##func##f(float v);                                 \
29    float __attribute__((overloadable)) func(float v) {return SC_##func##f(v);}
30
31#define IMPORT_F32_FN_F32_F32(func)                                     \
32    extern float SC_##func##f(float t, float v);                        \
33    float __attribute__((overloadable)) func(float t, float v) {return SC_##func##f(t, v);}
34
35IMPORT_F32_FN_F32(acos)
36IMPORT_F32_FN_F32(acosh)
37IMPORT_F32_FN_F32(asin)
38IMPORT_F32_FN_F32(asinh)
39IMPORT_F32_FN_F32(atan)
40IMPORT_F32_FN_F32_F32(atan2)
41IMPORT_F32_FN_F32(atanh)
42IMPORT_F32_FN_F32(cbrt)
43IMPORT_F32_FN_F32(ceil)
44IMPORT_F32_FN_F32_F32(copysign)
45IMPORT_F32_FN_F32(cos)
46IMPORT_F32_FN_F32(cosh)
47IMPORT_F32_FN_F32(erfc)
48IMPORT_F32_FN_F32(erf)
49IMPORT_F32_FN_F32(exp)
50IMPORT_F32_FN_F32(exp2)
51IMPORT_F32_FN_F32(expm1)
52IMPORT_F32_FN_F32_F32(fdim)
53IMPORT_F32_FN_F32(floor)
54extern float SC_fmaf(float u, float t, float v);
55float __attribute__((overloadable)) fma(float u, float t, float v) {return SC_fmaf(u, t, v);}
56IMPORT_F32_FN_F32_F32(fmax)
57IMPORT_F32_FN_F32_F32(fmin)
58IMPORT_F32_FN_F32_F32(fmod)
59extern float SC_frexpf(float v, int* ptr);
60float __attribute__((overloadable)) frexp(float v, int* ptr) {return SC_frexpf(v, ptr);}
61IMPORT_F32_FN_F32_F32(hypot)
62IMPORT_F32_FN_F32(ilogb)
63extern float SC_ldexpf(float v, int i);
64float __attribute__((overloadable)) ldexp(float v, int i) {return SC_ldexpf(v, i);}
65IMPORT_F32_FN_F32(lgamma)
66extern float SC_lgammaf_r(float v, int* ptr);
67float __attribute__((overloadable)) lgamma(float v, int* ptr) {return SC_lgammaf_r(v, ptr);}
68IMPORT_F32_FN_F32(log)
69IMPORT_F32_FN_F32(log10)
70IMPORT_F32_FN_F32(log1p)
71IMPORT_F32_FN_F32(logb)
72extern float SC_modff(float v, float* ptr);
73float modf(float v, float* ptr) {return SC_modff(v, ptr);}
74IMPORT_F32_FN_F32_F32(nextafter)
75IMPORT_F32_FN_F32_F32(pow)
76IMPORT_F32_FN_F32_F32(remainder)
77extern float SC_remquof(float t, float v, int* ptr);
78float remquo(float t, float v, int* ptr) {return SC_remquof(t, v, ptr);}
79IMPORT_F32_FN_F32(rint)
80IMPORT_F32_FN_F32(round)
81IMPORT_F32_FN_F32(sin)
82IMPORT_F32_FN_F32(sinh)
83IMPORT_F32_FN_F32(sqrt)
84IMPORT_F32_FN_F32(tan)
85IMPORT_F32_FN_F32(tanh)
86IMPORT_F32_FN_F32(tgamma)
87IMPORT_F32_FN_F32(trunc)
88
89extern float SC_randf2(float min, float max);
90float __attribute__((overloadable)) rsRand(float min, float max) {
91  return SC_randf2(min, max);
92}
93
94
95// !!! DANGER !!!
96// These functions are potentially missing on older Android versions.
97// Work around the issue by supplying our own variants.
98// !!! DANGER !!!
99
100// The logbl() implementation is taken from the latest bionic/, since
101// double == long double on Android.
102extern "C" long double logbl(long double x) { return logb(x); }
103
104// __aeabi_idiv0 is a missing function in libcompiler_rt.so, so we just
105// pick the simplest implementation based on the ARM EABI doc.
106extern "C" int __aeabi_idiv0(int v) { return v; }
107
108#endif // compatibility lib
109