2007-09-28 Patrick Mansfield <patmans@us.ibm.com>

	* configure.host: Define _POSIX_MODE to match the existing vector
	math code, as we don't support the matherr callout.
	* libm/machine/spu/Makefile.am: New file.
	* libm/machine/spu/Makefile.in: Auto-generated.
	* libm/machine/spu/headers/atanf.h: New file.
	* libm/machine/spu/headers/cbrt.h: Ditto.
	* libm/machine/spu/headers/cbrtf.h: Ditto.
	* libm/machine/spu/headers/ceil.h: Ditto.
	* libm/machine/spu/headers/ceilf.h: Ditto.
	* libm/machine/spu/headers/copysign.h: Ditto.
	* libm/machine/spu/headers/copysignf.h: Ditto.
	* libm/machine/spu/headers/exp2f.h: Ditto.
	* libm/machine/spu/headers/expf.h: Ditto.
	* libm/machine/spu/headers/fabs.h: Ditto.
	* libm/machine/spu/headers/fabsf.h: Ditto.
	* libm/machine/spu/headers/fdim.h: Ditto.
	* libm/machine/spu/headers/fdimf.h: Ditto.
	* libm/machine/spu/headers/floor.h: Ditto.
	* libm/machine/spu/headers/floorf.h: Ditto.
	* libm/machine/spu/headers/fma.h: Ditto.
	* libm/machine/spu/headers/fmaf.h: Ditto.
	* libm/machine/spu/headers/fmax.h: Ditto.
	* libm/machine/spu/headers/fmaxf.h: Ditto.
	* libm/machine/spu/headers/fmin.h: Ditto.
	* libm/machine/spu/headers/fminf.h: Ditto.
	* libm/machine/spu/headers/fmod.h: Ditto.
	* libm/machine/spu/headers/fmodf.h: Ditto.
	* libm/machine/spu/headers/frexp.h: Ditto.
	* libm/machine/spu/headers/frexpf.h: Ditto.
	* libm/machine/spu/headers/ilogb.h: Ditto.
	* libm/machine/spu/headers/ilogbf.h: Ditto.
	* libm/machine/spu/headers/ldexp.h: Ditto.
	* libm/machine/spu/headers/ldexpf.h: Ditto.
	* libm/machine/spu/headers/llrint.h: Ditto.
	* libm/machine/spu/headers/llrintf.h: Ditto.
	* libm/machine/spu/headers/llround.h: Ditto.
	* libm/machine/spu/headers/llroundf.h: Ditto.
	* libm/machine/spu/headers/log10f.h: Ditto.
	* libm/machine/spu/headers/log2f.h: Ditto.
	* libm/machine/spu/headers/logf.h: Ditto.
	* libm/machine/spu/headers/lrint.h: Ditto.
	* libm/machine/spu/headers/lrintf.h: Ditto.
	* libm/machine/spu/headers/lround.h: Ditto.
	* libm/machine/spu/headers/lroundf.h: Ditto.
	* libm/machine/spu/headers/nearbyint.h: Ditto.
	* libm/machine/spu/headers/remainder.h: Ditto.
	* libm/machine/spu/headers/remainderf.h: Ditto.
	* libm/machine/spu/headers/remquo.h: Ditto.
	* libm/machine/spu/headers/remquof.h: Ditto.
	* libm/machine/spu/headers/rint.h: Ditto.
	* libm/machine/spu/headers/round.h: Ditto.
	* libm/machine/spu/headers/roundf.h: Ditto.
	* libm/machine/spu/headers/scalbn.h: Ditto.
	* libm/machine/spu/headers/scalbnf.h: Ditto.
	* libm/machine/spu/headers/sqrt.h: Ditto.
	* libm/machine/spu/headers/trunc.h: Ditto.
	* libm/machine/spu/headers/truncf.h: Ditto.
	* libm/machine/spu/headers/vec_literal.h: Ditto.
	* libm/machine/spu/llrint.c: Ditto.
	* libm/machine/spu/llrintf.c: Ditto.
	* libm/machine/spu/llround.c: Ditto.
	* libm/machine/spu/llroundf.c: Ditto.
	* libm/machine/spu/log2f.c: Ditto.
	* libm/machine/spu/s_cbrt.c: Ditto.
	* libm/machine/spu/s_ceil.c: Ditto.
	* libm/machine/spu/s_copysign.c: Ditto.
	* libm/machine/spu/s_fabs.c: Ditto.
	* libm/machine/spu/s_fdim.c: Ditto.
	* libm/machine/spu/s_floor.c: Ditto.
	* libm/machine/spu/s_fma.c: Ditto.
	* libm/machine/spu/s_fmax.c: Ditto.
	* libm/machine/spu/s_fmin.c: Ditto.
	* libm/machine/spu/s_frexp.c: Ditto.
	* libm/machine/spu/s_ilogb.c: Ditto.
	* libm/machine/spu/s_ldexp.c: Ditto.
	* libm/machine/spu/s_lrint.c: Ditto.
	* libm/machine/spu/s_lround.c: Ditto.
	* libm/machine/spu/s_nearbyint.c: Ditto.
	* libm/machine/spu/s_remquo.c: Ditto.
	* libm/machine/spu/s_rint.c: Ditto.
	* libm/machine/spu/s_round.c: Ditto.
	* libm/machine/spu/s_scalbn.c: Ditto.
	* libm/machine/spu/s_trunc.c: Ditto.
	* libm/machine/spu/sf_atan.c: Ditto.
	* libm/machine/spu/sf_cbrt.c: Ditto.
	* libm/machine/spu/sf_ceil.c: Ditto.
	* libm/machine/spu/sf_copysign.c: Ditto.
	* libm/machine/spu/sf_fabs.c: Ditto.
	* libm/machine/spu/sf_fdim.c: Ditto.
	* libm/machine/spu/sf_floor.c: Ditto.
	* libm/machine/spu/sf_fma.c: Ditto.
	* libm/machine/spu/sf_fmax.c: Ditto.
	* libm/machine/spu/sf_fmin.c: Ditto.
	* libm/machine/spu/sf_frexp.c: Ditto.
	* libm/machine/spu/sf_ilogb.c: Ditto.
	* libm/machine/spu/sf_ldexp.c: Ditto.
	* libm/machine/spu/sf_lrint.c: Ditto.
	* libm/machine/spu/sf_lround.c: Ditto.
	* libm/machine/spu/sf_remquo.c: Ditto.
	* libm/machine/spu/sf_round.c: Ditto.
	* libm/machine/spu/sf_scalbn.c: Ditto.
	* libm/machine/spu/sf_trunc.c: Ditto.
	* libm/machine/spu/w_fmod.c: Ditto.
	* libm/machine/spu/w_remainder.c: Ditto.
	* libm/machine/spu/w_sqrt.c: Ditto.
	* libm/machine/spu/wf_exp.c: Ditto.
	* libm/machine/spu/wf_exp2.c: Ditto.
	* libm/machine/spu/wf_fmod.c: Ditto.
	* libm/machine/spu/wf_log.c: Ditto.
	* libm/machine/spu/wf_log10.c: Ditto.
	* libm/machine/spu/wf_remainder.c: Ditto.

1 files changed, 156 insertions, 0 deletions

diff --git a/newlib/libm/machine/spu/headers/fmodf.h b/newlib/libm/machine/spu/headers/fmodf.h
new file mode 100644
index 000000000..496ada490
--- /dev/null
+++ b/newlib/libm/machine/spu/headers/fmodf.h
@@ -0,0 +1,156 @@
+/*
+  (C) Copyright 2001,2006,
+  International Business Machines Corporation,
+  Sony Computer Entertainment, Incorporated,
+  Toshiba Corporation,
+
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+    * 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.
+    * Neither the names of the copyright holders nor the names of their
+  contributors may be used to endorse or promote products derived from this
+  software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER
+  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.
+*/
+#ifndef _FMODF_H_
+#define _FMODF_H_	1
+
+#include <spu_intrinsics.h>
+#include "headers/vec_literal.h"
+
+#include "fabsf.h"
+
+/*
+ * FUNCTION
+ *	float _fmodf(float x, float y)
+ *
+ * DESCRIPTION
+ *	The _fmodf subroutine computes the remainder of
+ *	dividing x by y. The return value is x - n*y, where n is
+ *	the quotient of x/y, rounded towards zero.
+ *
+ *	The full range form (default) provides fmod computation on
+ *	all IEEE floating point values (excluding floating overflow
+ *	or underflow).
+ *
+ *	The limited range form (selected by defining FMODF_INTEGER_RANGE)
+ *	compute fmod of all floating-point x/y values in the 32-bit
+ *	signed integer range. Values outside this range get clamped.
+ */
+
+static __inline float _fmodf(float x, float y)
+{
+#ifdef FMODF_INTEGER_RANGE
+  /* 32-BIT INTEGER DYNAMIC RANGE
+   */
+  float abs_y;
+  float quotient;
+
+  abs_y = _fabsf(y);
+  quotient = x/abs_y;
+
+  return (abs_y*(quotient - ((float)((int)quotient))));
+
+#else /* !FMODF_INTEGER_RANGE */
+  /* FULL FLOATING-POINT RANGE
+   */
+  int n;
+  vec_uint4 vx, vy, z;
+  vec_uint4 abs_x, abs_y;
+  vec_uint4 exp_x, exp_y;
+  vec_uint4 zero_x, zero_y;
+  vec_uint4 logb_x, logb_y;
+  vec_uint4 mant_x, mant_y;
+  vec_uint4 result, result0, resultx, cnt, sign;
+  vec_uint4 sign_mask = VEC_SPLAT_U32(0x80000000);
+  vec_uint4 implied_1 = VEC_SPLAT_U32(0x00800000);
+  vec_uint4 mant_mask = VEC_SPLAT_U32(0x007FFFFF);
+
+  vx = (vec_uint4)spu_promote(x, 0);
+  vy = (vec_uint4)spu_promote(y, 0);
+
+  abs_x = spu_andc(vx, sign_mask);
+  abs_y = spu_andc(vy, sign_mask);
+
+  sign = spu_and(vx, sign_mask);
+
+  /* Determine ilogb of abs_x and abs_y and
+   * extract the mantissas (mant_x, mant_y)
+   */
+  exp_x  = spu_rlmask(abs_x, -23);
+  exp_y  = spu_rlmask(abs_y, -23);
+
+  resultx = spu_cmpgt(abs_y, abs_x);
+
+  zero_x = spu_cmpeq(exp_x, 0);
+  zero_y = spu_cmpeq(exp_y, 0);
+
+  logb_x = spu_add(exp_x, -127);
+  logb_y = spu_add(exp_y, -127);
+
+  mant_x = spu_andc(spu_sel(implied_1, abs_x, mant_mask), zero_x);
+  mant_y = spu_andc(spu_sel(implied_1, abs_y, mant_mask), zero_y);
+
+  /* Compute fixed point fmod of mant_x and mant_y. Set the flag,
+   * result0, to all ones if we detect that the final result is
+   * ever 0.
+   */
+  result0 = spu_or(zero_x, zero_y);
+
+  n = spu_extract(spu_sub(logb_x, logb_y), 0);
+
+  while (n-- > 0) {
+    z = spu_sub(mant_x, mant_y);
+
+    result0 = spu_or(spu_cmpeq(z, 0), result0);
+
+    mant_x = spu_sel(spu_add(mant_x, mant_x), spu_add(z, z),
+                     spu_cmpgt((vec_int4)z, -1));
+  }
+
+  z = spu_sub(mant_x, mant_y);
+  mant_x = spu_sel(mant_x, z, spu_cmpgt((vec_int4)z, -1));
+
+  result0 = spu_or(spu_cmpeq(mant_x, 0), result0);
+
+  /* Convert the result back to floating point and restore
+   * the sign. If we flagged the result to be zero (result0),
+   * zero it. If we flagged the result to equal its input x,
+   * (resultx) then return x.
+   */
+  cnt = spu_add(spu_cntlz(mant_x), -8);
+
+  mant_x = spu_rl(spu_andc(mant_x, implied_1), (vec_int4)cnt);
+
+  exp_y = spu_sub(exp_y, cnt);
+  result0 = spu_orc(result0, spu_cmpgt((vec_int4)exp_y, 0)); /* zero denorm results */
+  exp_y = spu_rl(exp_y, 23);
+
+
+  result = spu_sel(exp_y, spu_or(sign, mant_x), VEC_SPLAT_U32(0x807FFFFF));
+
+  result = spu_sel(spu_andc(result, spu_rlmask(result0, -1)), vx,
+                   resultx);
+
+  return (spu_extract((vec_float4)result, 0));
+#endif /* FMODF_INTEGER_RANGE */
+}
+#endif /* _FMODF_H_ */