build: Build mlibc + add distclean target

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

1 files changed, 0 insertions, 107 deletions

diff --git a/lib/mlibc/options/ansi/musl-generic-math/atan2.c b/lib/mlibc/options/ansi/musl-generic-math/atan2.c
deleted file mode 100644
index 5a1903c..0000000
--- a/lib/mlibc/options/ansi/musl-generic-math/atan2.c
+++ /dev/null
@@ -1,107 +0,0 @@
-/* origin: FreeBSD /usr/src/lib/msun/src/e_atan2.c */
-/*
- * ====================================================
- * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
- *
- * Developed at SunSoft, a Sun Microsystems, Inc. business.
- * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
- * is preserved.
- * ====================================================
- *
- */
-/* atan2(y,x)
- * Method :
- *      1. Reduce y to positive by atan2(y,x)=-atan2(-y,x).
- *      2. Reduce x to positive by (if x and y are unexceptional):
- *              ARG (x+iy) = arctan(y/x)           ... if x > 0,
- *              ARG (x+iy) = pi - arctan[y/(-x)]   ... if x < 0,
- *
- * Special cases:
- *
- *      ATAN2((anything), NaN ) is NaN;
- *      ATAN2(NAN , (anything) ) is NaN;
- *      ATAN2(+-0, +(anything but NaN)) is +-0  ;
- *      ATAN2(+-0, -(anything but NaN)) is +-pi ;
- *      ATAN2(+-(anything but 0 and NaN), 0) is +-pi/2;
- *      ATAN2(+-(anything but INF and NaN), +INF) is +-0 ;
- *      ATAN2(+-(anything but INF and NaN), -INF) is +-pi;
- *      ATAN2(+-INF,+INF ) is +-pi/4 ;
- *      ATAN2(+-INF,-INF ) is +-3pi/4;
- *      ATAN2(+-INF, (anything but,0,NaN, and INF)) is +-pi/2;
- *
- * Constants:
- * The hexadecimal values are the intended ones for the following
- * constants. The decimal values may be used, provided that the
- * compiler will convert from decimal to binary accurately enough
- * to produce the hexadecimal values shown.
- */
-
-#include "libm.h"
-
-static const double
-pi     = 3.1415926535897931160E+00, /* 0x400921FB, 0x54442D18 */
-pi_lo  = 1.2246467991473531772E-16; /* 0x3CA1A626, 0x33145C07 */
-
-double atan2(double y, double x)
-{
-	double z;
-	uint32_t m,lx,ly,ix,iy;
-
-	if (isnan(x) || isnan(y))
-		return x+y;
-	EXTRACT_WORDS(ix, lx, x);
-	EXTRACT_WORDS(iy, ly, y);
-	if ((ix-0x3ff00000 | lx) == 0)  /* x = 1.0 */
-		return atan(y);
-	m = ((iy>>31)&1) | ((ix>>30)&2);  /* 2*sign(x)+sign(y) */
-	ix = ix & 0x7fffffff;
-	iy = iy & 0x7fffffff;
-
-	/* when y = 0 */
-	if ((iy|ly) == 0) {
-		switch(m) {
-		case 0:
-		case 1: return y;   /* atan(+-0,+anything)=+-0 */
-		case 2: return  pi; /* atan(+0,-anything) = pi */
-		case 3: return -pi; /* atan(-0,-anything) =-pi */
-		}
-	}
-	/* when x = 0 */
-	if ((ix|lx) == 0)
-		return m&1 ? -pi/2 : pi/2;
-	/* when x is INF */
-	if (ix == 0x7ff00000) {
-		if (iy == 0x7ff00000) {
-			switch(m) {
-			case 0: return  pi/4;   /* atan(+INF,+INF) */
-			case 1: return -pi/4;   /* atan(-INF,+INF) */
-			case 2: return  3*pi/4; /* atan(+INF,-INF) */
-			case 3: return -3*pi/4; /* atan(-INF,-INF) */
-			}
-		} else {
-			switch(m) {
-			case 0: return  0.0; /* atan(+...,+INF) */
-			case 1: return -0.0; /* atan(-...,+INF) */
-			case 2: return  pi;  /* atan(+...,-INF) */
-			case 3: return -pi;  /* atan(-...,-INF) */
-			}
-		}
-	}
-	/* |y/x| > 0x1p64 */
-	if (ix+(64<<20) < iy || iy == 0x7ff00000)
-		return m&1 ? -pi/2 : pi/2;
-
-	/* z = atan(|y/x|) without spurious underflow */
-	if ((m&2) && iy+(64<<20) < ix)  /* |y/x| < 0x1p-64, x<0 */
-		z = 0;
-	else
-		z = atan(fabs(y/x));
-	switch (m) {
-	case 0: return z;              /* atan(+,+) */
-	case 1: return -z;             /* atan(-,+) */
-	case 2: return pi - (z-pi_lo); /* atan(+,-) */
-	default: /* case 3 */
-		return (z-pi_lo) - pi; /* atan(-,-) */
-	}
-}