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5261 libm should stop using synonyms.h
5298 fabs is 0-sized, confuses dis(1) and others
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Approved by: Gordon Ross <gwr@nexenta.com>


   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  23  */
  24 /*
  25  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28 
  29 #pragma weak log10 = __log10
  30 
  31 /* INDENT OFF */
  32 /*
  33  * log10(x) = log(x)/log10
  34  *
  35  * Base on Table look-up algorithm with product polynomial
  36  * approximation for log(x).
  37  *
  38  * By K.C. Ng, Nov 29, 2004
  39  *
  40  * (a). For x in [1-0.125, 1+0.125], from log.c we have
  41  *      log(x) =  f + ((a1*f^2) *
  42  *                 ((a2 + (a3*f)*(a4+f)) + (f^3)*(a5+f))) *
  43  *                 (((a6 + f*(a7+f)) + (f^3)*(a8+f)) *
  44  *                 ((a9 + (a10*f)*(a11+f)) + (f^3)*(a12+f)))
  45  *      where f = x - 1.
  46  *      (i) modify a1 <- a1 / log10
  47  *      (ii) 1/log10 = 0.4342944819...
  48  *                   = 0.4375 - 0.003205518... (7 bit shift)
  49  *           Let lgv = 0.4375 - 1/log10, then




   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  23  */
  24 /*
  25  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28 
  29 #pragma weak __log10 = log10
  30 
  31 /* INDENT OFF */
  32 /*
  33  * log10(x) = log(x)/log10
  34  *
  35  * Base on Table look-up algorithm with product polynomial
  36  * approximation for log(x).
  37  *
  38  * By K.C. Ng, Nov 29, 2004
  39  *
  40  * (a). For x in [1-0.125, 1+0.125], from log.c we have
  41  *      log(x) =  f + ((a1*f^2) *
  42  *                 ((a2 + (a3*f)*(a4+f)) + (f^3)*(a5+f))) *
  43  *                 (((a6 + f*(a7+f)) + (f^3)*(a8+f)) *
  44  *                 ((a9 + (a10*f)*(a11+f)) + (f^3)*(a12+f)))
  45  *      where f = x - 1.
  46  *      (i) modify a1 <- a1 / log10
  47  *      (ii) 1/log10 = 0.4342944819...
  48  *                   = 0.4375 - 0.003205518... (7 bit shift)
  49  *           Let lgv = 0.4375 - 1/log10, then