1 files changed, 61 insertions, 0 deletions
diff --git a/src/math/__sinl.c b/src/math/__sinl.c
new file mode 100644
index 00000000..71851d81
--- /dev/null
+++ b/src/math/__sinl.c
@@ -0,0 +1,61 @@
+/* origin: FreeBSD /usr/src/lib/msun/ld80/k_sinl.c */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2008 Steven G. Kargl, David Schultz, Bruce D. Evans.
+ *
+ * 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.
+ * ====================================================
+ */
+
+#include "libm.h"
+
+#if LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
+/*
+ * ld80 version of __sin.c.  See __sin.c for most comments.
+ */
+/*
+ * Domain [-0.7854, 0.7854], range ~[-1.89e-22, 1.915e-22]
+ * |sin(x)/x - s(x)| < 2**-72.1
+ *
+ * See __cosl.c for more details about the polynomial.
+ */
+
+static const double half = 0.5;
+
+// FIXME
+/* Long double constants are slow on these arches, and broken on i386. */
+static const volatile double
+S1hi = -0.16666666666666666,      /* -0x15555555555555.0p-55 */
+S1lo = -9.2563760475949941e-18;   /* -0x15580000000000.0p-109 */
+#define S1      ((long double)S1hi + S1lo)
+
+#if 0
+static const long double
+S1 = -0.166666666666666666671L;   /* -0xaaaaaaaaaaaaaaab.0p-66 */
+#endif
+
+static const double
+S2 =  0.0083333333333333332,      /*  0x11111111111111.0p-59 */
+S3 = -0.00019841269841269427,     /* -0x1a01a01a019f81.0p-65 */
+S4 =  0.0000027557319223597490,   /*  0x171de3a55560f7.0p-71 */
+S5 = -0.000000025052108218074604, /* -0x1ae64564f16cad.0p-78 */
+S6 =  1.6059006598854211e-10,     /*  0x161242b90243b5.0p-85 */
+S7 = -7.6429779983024564e-13,     /* -0x1ae42ebd1b2e00.0p-93 */
+S8 =  2.6174587166648325e-15;     /*  0x179372ea0b3f64.0p-101 */
+
+long double __sinl(long double x, long double y, int iy)
+{
+	long double z,r,v;
+
+	z = x*x;
+	v = z*x;
+	r = S2+z*(S3+z*(S4+z*(S5+z*(S6+z*(S7+z*S8)))));
+	if (iy == 0)
+		return x+v*(S1+z*r);
+	return x-((z*(half*y-v*r)-y)-v*S1);
+}
+#endif