build: Build mlibc + add distclean target

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

1 files changed, 0 insertions, 110 deletions

diff --git a/lib/mlibc/options/ansi/musl-generic-math/__tan.c b/lib/mlibc/options/ansi/musl-generic-math/__tan.c
deleted file mode 100644
index 8019844..0000000
--- a/lib/mlibc/options/ansi/musl-generic-math/__tan.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/* origin: FreeBSD /usr/src/lib/msun/src/k_tan.c */
-/*
- * ====================================================
- * Copyright 2004 Sun Microsystems, Inc.  All Rights Reserved.
- *
- * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
- * is preserved.
- * ====================================================
- */
-/* __tan( x, y, k )
- * kernel tan function on ~[-pi/4, pi/4] (except on -0), pi/4 ~ 0.7854
- * Input x is assumed to be bounded by ~pi/4 in magnitude.
- * Input y is the tail of x.
- * Input odd indicates whether tan (if odd = 0) or -1/tan (if odd = 1) is returned.
- *
- * Algorithm
- *      1. Since tan(-x) = -tan(x), we need only to consider positive x.
- *      2. Callers must return tan(-0) = -0 without calling here since our
- *         odd polynomial is not evaluated in a way that preserves -0.
- *         Callers may do the optimization tan(x) ~ x for tiny x.
- *      3. tan(x) is approximated by a odd polynomial of degree 27 on
- *         [0,0.67434]
- *                               3             27
- *              tan(x) ~ x + T1*x + ... + T13*x
- *         where
- *
- *              |tan(x)         2     4            26   |     -59.2
- *              |----- - (1+T1*x +T2*x +.... +T13*x    )| <= 2
- *              |  x                                    |
- *
- *         Note: tan(x+y) = tan(x) + tan'(x)*y
- *                        ~ tan(x) + (1+x*x)*y
- *         Therefore, for better accuracy in computing tan(x+y), let
- *                   3      2      2       2       2
- *              r = x *(T2+x *(T3+x *(...+x *(T12+x *T13))))
- *         then
- *                                  3    2
- *              tan(x+y) = x + (T1*x + (x *(r+y)+y))
- *
- *      4. For x in [0.67434,pi/4],  let y = pi/4 - x, then
- *              tan(x) = tan(pi/4-y) = (1-tan(y))/(1+tan(y))
- *                     = 1 - 2*(tan(y) - (tan(y)^2)/(1+tan(y)))
- */
-
-#include "libm.h"
-
-static const double T[] = {
-             3.33333333333334091986e-01, /* 3FD55555, 55555563 */
-             1.33333333333201242699e-01, /* 3FC11111, 1110FE7A */
-             5.39682539762260521377e-02, /* 3FABA1BA, 1BB341FE */
-             2.18694882948595424599e-02, /* 3F9664F4, 8406D637 */
-             8.86323982359930005737e-03, /* 3F8226E3, E96E8493 */
-             3.59207910759131235356e-03, /* 3F6D6D22, C9560328 */
-             1.45620945432529025516e-03, /* 3F57DBC8, FEE08315 */
-             5.88041240820264096874e-04, /* 3F4344D8, F2F26501 */
-             2.46463134818469906812e-04, /* 3F3026F7, 1A8D1068 */
-             7.81794442939557092300e-05, /* 3F147E88, A03792A6 */
-             7.14072491382608190305e-05, /* 3F12B80F, 32F0A7E9 */
-            -1.85586374855275456654e-05, /* BEF375CB, DB605373 */
-             2.59073051863633712884e-05, /* 3EFB2A70, 74BF7AD4 */
-},
-pio4 =       7.85398163397448278999e-01, /* 3FE921FB, 54442D18 */
-pio4lo =     3.06161699786838301793e-17; /* 3C81A626, 33145C07 */
-
-double __tan(double x, double y, int odd)
-{
-	double_t z, r, v, w, s, a;
-	double w0, a0;
-	uint32_t hx;
-	int big, sign;
-
-	GET_HIGH_WORD(hx,x);
-	big = (hx&0x7fffffff) >= 0x3FE59428; /* |x| >= 0.6744 */
-	if (big) {
-		sign = hx>>31;
-		if (sign) {
-			x = -x;
-			y = -y;
-		}
-		x = (pio4 - x) + (pio4lo - y);
-		y = 0.0;
-	}
-	z = x * x;
-	w = z * z;
-	/*
-	 * Break x^5*(T[1]+x^2*T[2]+...) into
-	 * x^5(T[1]+x^4*T[3]+...+x^20*T[11]) +
-	 * x^5(x^2*(T[2]+x^4*T[4]+...+x^22*[T12]))
-	 */
-	r = T[1] + w*(T[3] + w*(T[5] + w*(T[7] + w*(T[9] + w*T[11]))));
-	v = z*(T[2] + w*(T[4] + w*(T[6] + w*(T[8] + w*(T[10] + w*T[12])))));
-	s = z * x;
-	r = y + z*(s*(r + v) + y) + s*T[0];
-	w = x + r;
-	if (big) {
-		s = 1 - 2*odd;
-		v = s - 2.0 * (x + (r - w*w/(w + s)));
-		return sign ? -v : v;
-	}
-	if (!odd)
-		return w;
-	/* -1.0/(x+r) has up to 2ulp error, so compute it accurately */
-	w0 = w;
-	SET_LOW_WORD(w0, 0);
-	v = r - (w0 - x);       /* w0+v = r+x */
-	a0 = a = -1.0 / w;
-	SET_LOW_WORD(a0, 0);
-	return a0 + a*(1.0 + a0*w0 + a0*v);
-}