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Make further progress on non-x86 support

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Justine Tunney 2023-05-08 21:38:30 -07:00
parent aef9a69a60
commit 036b9a0002
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GPG key ID: BE714B4575D6E328
155 changed files with 2307 additions and 653 deletions
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24
libc/tinymath/acosl.c
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@ -36,7 +36,7 @@ asm(".ident\t\"\\n\\n\
Musl libc (MIT License)\\n\
Copyright 2005-2014 Rich Felker, et. al.\"");
asm(".include \"libc/disclaimer.inc\"");
/* clang-format off */
// clang-format off
/* origin: FreeBSD /usr/src/lib/msun/src/e_acosl.c */
/*
@ -54,11 +54,15 @@ asm(".include \"libc/disclaimer.inc\"");
* Converted to long double by David Schultz <das@FreeBSD.ORG>.
*/
/**
* Returns arc cosine of 𝑥.
*
* @define atan2(fabs(sqrt((1-𝑥)*(1+𝑥))),𝑥)
* @domain -1 ≤ 𝑥 ≤ 1
*/
long double acosl(long double x) {
#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
long double acosl(long double x)
{
return acos(x);
}
#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
#if LDBL_MANT_DIG == 64
#define CLEARBOTTOM(u) (u.i.m &= -1ULL << 32)
@ -66,14 +70,6 @@ long double acosl(long double x)
#define CLEARBOTTOM(u) (u.i.lo = 0)
#endif
/**
* Returns arc cosine of 𝑥.
*
* @define atan2(fabs(sqrt((1-𝑥)*(1+𝑥))),𝑥)
* @domain -1 ≤ 𝑥 ≤ 1
*/
long double acosl(long double x)
{
union ldshape u = {x};
long double z, s, c, f;
uint16_t e = u.i.se & 0x7fff;
@ -106,6 +102,8 @@ long double acosl(long double x)
f = u.f;
c = (z - f*f)/(s + f);
return 2*(__invtrigl_R(z)*s + c + f);
}
#else
#error "architecture unsupported"
#endif
}