Upgrade libm.
This brings us up to date with FreeBSD HEAD, fixes various bugs, unifies
the set of functions we support on ARM, MIPS, and x86, fixes "long double",
adds ISO C99 support, and adds basic unit tests.
It turns out that our "long double" functions have always been broken
for non-normal numbers. This patch fixes that by not using the upstream
implementations and just forwarding to the regular "double" implementation
instead (since "long double" on Android is just "double" anyway, which is
what BSD doesn't support).
All the tests pass on ARM, MIPS, and x86, plus glibc on x86-64.
Bug: 3169850
Bug: 8012787
Bug: https://code.google.com/p/android/issues/detail?id=6697
Change-Id: If0c343030959c24bfc50d4d21c9530052c581837
diff --git a/libm/include/complex.h b/libm/include/complex.h
new file mode 100644
index 0000000..0702541
--- /dev/null
+++ b/libm/include/complex.h
@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 2001-2011 The FreeBSD Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _COMPLEX_H
+#define _COMPLEX_H
+
+#include <sys/cdefs.h>
+
+#ifdef __GNUC__
+#if __STDC_VERSION__ < 199901
+#define _Complex __complex__
+#endif
+#define _Complex_I ((float _Complex)1.0i)
+#endif
+
+#ifdef __generic
+_Static_assert(__generic(_Complex_I, float _Complex, 1, 0),
+ "_Complex_I must be of type float _Complex");
+#endif
+
+#define complex _Complex
+#define I _Complex_I
+
+__BEGIN_DECLS
+
+double cabs(double complex);
+float cabsf(float complex);
+long double cabsl(long double complex);
+double carg(double complex);
+float cargf(float complex);
+long double cargl(long double complex);
+double complex ccos(double complex);
+float complex ccosf(float complex);
+double complex ccosh(double complex);
+float complex ccoshf(float complex);
+double complex cexp(double complex);
+float complex cexpf(float complex);
+double cimag(double complex) __pure2;
+float cimagf(float complex) __pure2;
+long double cimagl(long double complex) __pure2;
+double complex conj(double complex) __pure2;
+float complex conjf(float complex) __pure2;
+long double complex
+ conjl(long double complex) __pure2;
+float complex cprojf(float complex) __pure2;
+double complex cproj(double complex) __pure2;
+long double complex
+ cprojl(long double complex) __pure2;
+double creal(double complex) __pure2;
+float crealf(float complex) __pure2;
+long double creall(long double complex) __pure2;
+double complex csin(double complex);
+float complex csinf(float complex);
+double complex csinh(double complex);
+float complex csinhf(float complex);
+double complex csqrt(double complex);
+float complex csqrtf(float complex);
+long double complex
+ csqrtl(long double complex);
+double complex ctan(double complex);
+float complex ctanf(float complex);
+double complex ctanh(double complex);
+float complex ctanhf(float complex);
+
+__END_DECLS
+
+#endif /* _COMPLEX_H */