1 files changed, 96 insertions, 0 deletions
diff --git a/usr/src/lib/libm/common/complex/cexpf.c b/usr/src/lib/libm/common/complex/cexpf.c
new file mode 100644
index 0000000000..411b6d4f6e
--- /dev/null
+++ b/usr/src/lib/libm/common/complex/cexpf.c
@@ -0,0 +1,96 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
+ */
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma weak cexpf = __cexpf
+
+#include "libm.h"
+#include "complex_wrapper.h"
+
+#if defined(__i386) && !defined(__amd64)
+extern int __swapRP(int);
+#endif
+
+static const float zero = 0.0F;
+
+fcomplex
+cexpf(fcomplex z) {
+	fcomplex	ans;
+	float		x, y, c, s;
+	double		t;
+	int		n, ix, iy, hx, hy;
+
+	x = F_RE(z);
+	y = F_IM(z);
+	hx = THE_WORD(x);
+	hy = THE_WORD(y);
+	ix = hx & 0x7fffffff;
+	iy = hy & 0x7fffffff;
+	if (iy == 0) {		/* y = 0 */
+		F_RE(ans) = expf(x);
+		F_IM(ans) = y;
+	} else if (ix == 0x7f800000) {	/* x is +-inf */
+		if (hx < 0) {
+			if (iy >= 0x7f800000) {
+				F_RE(ans) = zero;
+				F_IM(ans) = zero;
+			} else {
+				sincosf(y, &s, &c);
+				F_RE(ans) = zero * c;
+				F_IM(ans) = zero * s;
+			}
+		} else {
+			if (iy >= 0x7f800000) {
+				F_RE(ans) = x;
+				F_IM(ans) = y - y;
+			} else {
+				sincosf(y, &s, &c);
+				F_RE(ans) = x * c;
+				F_IM(ans) = x * s;
+			}
+		}
+	} else {
+		sincosf(y, &s, &c);
+		if (ix >= 0x42B171AA) {	/* |x| > 88.722... ~ log(2**128) */
+#if defined(__i386) && !defined(__amd64)
+			int	rp = __swapRP(fp_extended);
+#endif
+			t = __k_cexp(x, &n);
+			F_RE(ans) = (float)scalbn(t * (double)c, n);
+			F_IM(ans) = (float)scalbn(t * (double)s, n);
+#if defined(__i386) && !defined(__amd64)
+			if (rp != fp_extended)
+				(void) __swapRP(rp);
+#endif
+		} else {
+			t = expf(x);
+			F_RE(ans) = t * c;
+			F_IM(ans) = t * s;
+		}
+	}
+	return (ans);
+}