platform_bionic/libm/fake_long_double.c
Elliott Hughes 5ea0b0667f libm symbol cleanup.
Some of this code is used in the NDK libandroid_support now, as a static
library, so just being HIDDEN in the ELF sense isn't sufficient.

Rename digittoint to __libm_digittoint so we don't trample anyone's toes.

Also remove imprecise_powl and imprecise_tgammal. It turns out (to my
surprise) that we don't even have ld128 implementations of powl and tgammal,
so even LP64 was just using the "fake_long_double.c" hack in effect. Since
that's the case, let's *actually* do that because then we're not polluting
with the internal names in addition to the aliases.

Bug: N/A
Test: readelf
Change-Id: I273cc8fdc7ce53f9b8dfd4ef7796e358fe901837
2017-07-13 17:33:15 -07:00

45 lines
2 KiB
C

/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <float.h>
#include <math.h>
#if !defined(__LP64__)
// The BSD "long double" functions are broken when sizeof(long double) == sizeof(double).
// Android works around those cases by replacing the broken functions with our own trivial stubs
// that call the regular "double" function.
long double copysignl(long double a1, long double a2) { return copysign(a1, a2); }
long double fmaxl(long double a1, long double a2) { return fmax(a1, a2); }
long double fmodl(long double a1, long double a2) { return fmod(a1, a2); }
long double fminl(long double a1, long double a2) { return fmin(a1, a2); }
int ilogbl(long double a1) { return ilogb(a1); }
long long llrintl(long double a1) { return llrint(a1); }
#if !defined(__i386__) // x86 has an assembler lrint/lrintl.
long lrintl(long double a1) { return lrint(a1); }
#endif
long long llroundl(long double a1) { return llround(a1); }
long lroundl(long double a1) { return lround(a1); }
long double modfl(long double a1, long double* a2) { double i; double f = modf(a1, &i); *a2 = i; return f; }
float nexttowardf(float a1, long double a2) { return nextafterf(a1, (float) a2); }
long double roundl(long double a1) { return round(a1); }
#endif // __LP64__
// FreeBSD doesn't have ld128 implementations of powl or tgammal, so both LP32 and LP64 need these.
long double powl(long double x, long double y) { return pow(x, y); }
long double tgammal(long double x) { return tgamma(x); }