build: Build mlibc + add distclean target

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 0 insertions, 124 deletions

diff --git a/lib/mlibc/options/ansi/musl-generic-math/cbrtl.c b/lib/mlibc/options/ansi/musl-generic-math/cbrtl.c
deleted file mode 100644
index ceff913..0000000
--- a/lib/mlibc/options/ansi/musl-generic-math/cbrtl.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/* origin: FreeBSD /usr/src/lib/msun/src/s_cbrtl.c */
-/*-
- * ====================================================
- * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
- * Copyright (c) 2009-2011, Bruce D. Evans, Steven G. Kargl, David Schultz.
- *
- * Developed at SunPro, a Sun Microsystems, Inc. business.
- * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
- * is preserved.
- * ====================================================
- *
- * The argument reduction and testing for exceptional cases was
- * written by Steven G. Kargl with input from Bruce D. Evans
- * and David A. Schultz.
- */
-
-#include "libm.h"
-
-#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
-long double cbrtl(long double x)
-{
-	return cbrt(x);
-}
-#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
-static const unsigned B1 = 709958130; /* B1 = (127-127.0/3-0.03306235651)*2**23 */
-
-long double cbrtl(long double x)
-{
-	union ldshape u = {x}, v;
-	union {float f; uint32_t i;} uft;
-	long double r, s, t, w;
-	double_t dr, dt, dx;
-	float_t ft;
-	int e = u.i.se & 0x7fff;
-	int sign = u.i.se & 0x8000;
-
-	/*
-	 * If x = +-Inf, then cbrt(x) = +-Inf.
-	 * If x = NaN, then cbrt(x) = NaN.
-	 */
-	if (e == 0x7fff)
-		return x + x;
-	if (e == 0) {
-		/* Adjust subnormal numbers. */
-		u.f *= 0x1p120;
-		e = u.i.se & 0x7fff;
-		/* If x = +-0, then cbrt(x) = +-0. */
-		if (e == 0)
-			return x;
-		e -= 120;
-	}
-	e -= 0x3fff;
-	u.i.se = 0x3fff;
-	x = u.f;
-	switch (e % 3) {
-	case 1:
-	case -2:
-		x *= 2;
-		e--;
-		break;
-	case 2:
-	case -1:
-		x *= 4;
-		e -= 2;
-		break;
-	}
-	v.f = 1.0;
-	v.i.se = sign | (0x3fff + e/3);
-
-	/*
-	 * The following is the guts of s_cbrtf, with the handling of
-	 * special values removed and extra care for accuracy not taken,
-	 * but with most of the extra accuracy not discarded.
-	 */
-
-	/* ~5-bit estimate: */
-	uft.f = x;
-	uft.i = (uft.i & 0x7fffffff)/3 + B1;
-	ft = uft.f;
-
-	/* ~16-bit estimate: */
-	dx = x;
-	dt = ft;
-	dr = dt * dt * dt;
-	dt = dt * (dx + dx + dr) / (dx + dr + dr);
-
-	/* ~47-bit estimate: */
-	dr = dt * dt * dt;
-	dt = dt * (dx + dx + dr) / (dx + dr + dr);
-
-#if LDBL_MANT_DIG == 64
-	/*
-	 * dt is cbrtl(x) to ~47 bits (after x has been reduced to 1 <= x < 8).
-	 * Round it away from zero to 32 bits (32 so that t*t is exact, and
-	 * away from zero for technical reasons).
-	 */
-	t = dt + (0x1.0p32L + 0x1.0p-31L) - 0x1.0p32;
-#elif LDBL_MANT_DIG == 113
-	/*
-	 * Round dt away from zero to 47 bits.  Since we don't trust the 47,
-	 * add 2 47-bit ulps instead of 1 to round up.  Rounding is slow and
-	 * might be avoidable in this case, since on most machines dt will
-	 * have been evaluated in 53-bit precision and the technical reasons
-	 * for rounding up might not apply to either case in cbrtl() since
-	 * dt is much more accurate than needed.
-	 */
-	t = dt + 0x2.0p-46 + 0x1.0p60L - 0x1.0p60;
-#endif
-
-	/*
-	 * Final step Newton iteration to 64 or 113 bits with
-	 * error < 0.667 ulps
-	 */
-	s = t*t;         /* t*t is exact */
-	r = x/s;         /* error <= 0.5 ulps; |r| < |t| */
-	w = t+t;         /* t+t is exact */
-	r = (r-t)/(w+r); /* r-t is exact; w+r ~= 3*t */
-	t = t+t*r;       /* error <= 0.5 + 0.5/3 + epsilon */
-
-	t *= v.f;
-	return t;
-}
-#endif