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Diffstat (limited to 'lib/mlibc/options/ansi/musl-generic-math/atan2f.c')
-rw-r--r--lib/mlibc/options/ansi/musl-generic-math/atan2f.c83
1 files changed, 0 insertions, 83 deletions
diff --git a/lib/mlibc/options/ansi/musl-generic-math/atan2f.c b/lib/mlibc/options/ansi/musl-generic-math/atan2f.c
deleted file mode 100644
index c634d00..0000000
--- a/lib/mlibc/options/ansi/musl-generic-math/atan2f.c
+++ /dev/null
@@ -1,83 +0,0 @@
-/* origin: FreeBSD /usr/src/lib/msun/src/e_atan2f.c */
-/*
- * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
- */
-/*
- * ====================================================
- * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
- *
- * 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.
- * ====================================================
- */
-
-#include "libm.h"
-
-static const float
-pi = 3.1415927410e+00, /* 0x40490fdb */
-pi_lo = -8.7422776573e-08; /* 0xb3bbbd2e */
-
-float atan2f(float y, float x)
-{
- float z;
- uint32_t m,ix,iy;
-
- if (isnan(x) || isnan(y))
- return x+y;
- GET_FLOAT_WORD(ix, x);
- GET_FLOAT_WORD(iy, y);
- if (ix == 0x3f800000) /* x=1.0 */
- return atanf(y);
- m = ((iy>>31)&1) | ((ix>>30)&2); /* 2*sign(x)+sign(y) */
- ix &= 0x7fffffff;
- iy &= 0x7fffffff;
-
- /* when y = 0 */
- if (iy == 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 == 0)
- return m&1 ? -pi/2 : pi/2;
- /* when x is INF */
- if (ix == 0x7f800000) {
- if (iy == 0x7f800000) {
- 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 0.0f; /* atan(+...,+INF) */
- case 1: return -0.0f; /* atan(-...,+INF) */
- case 2: return pi; /* atan(+...,-INF) */
- case 3: return -pi; /* atan(-...,-INF) */
- }
- }
- }
- /* |y/x| > 0x1p26 */
- if (ix+(26<<23) < iy || iy == 0x7f800000)
- return m&1 ? -pi/2 : pi/2;
-
- /* z = atan(|y/x|) with correct underflow */
- if ((m&2) && iy+(26<<23) < ix) /*|y/x| < 0x1p-26, x < 0 */
- z = 0.0;
- else
- z = atanf(fabsf(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(-,-) */
- }
-}