HP2100/hp2100_fp1.h

   1 /* hp2100_fp1.h: HP 2100/1000 multiple-precision floating point definitions
   2
   3    Copyright (c) 2005-2006, J. David Bryan
   4
   5    Permission is hereby granted, free of charge, to any person obtaining a
   6    copy of this software and associated documentation files (the "Software"),
   7    to deal in the Software without restriction, including without limitation
   8    the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9    and/or sell copies of the Software, and to permit persons to whom the
  10    Software is furnished to do so, subject to the following conditions:
  11
  12    The above copyright notice and this permission notice shall be included in
  13    all copies or substantial portions of the Software.
  14
  15    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18    THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  19    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  20    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21
  22    Except as contained in this notice, the name of the author shall not be used
  23    in advertising or otherwise to promote the sale, use or other dealings in
  24    this Software without prior written authorization from the author.
  25
  26    16-Oct-06    JDB     Generalized FP calling sequences for F-Series
  27    12-Oct-06    JDB     Altered x_trun for F-Series FFP compatibility
  28 */
  29
  30 #ifndef _HP2100_FP1_H_
  31 #define _HP2100_FP1_H_  0
  32
  33
  34 /* Special operands. */
  35
  36 #define ACCUM   NULL                                    /* result not returned */
  37 static const OP NOP = { { 0, 0, 0, 0, 0 } };            /* unneeded operand */
  38
  39
  40 /* Generalized floating-point handlers. */
  41
  42 void   fp_prec   (uint16 opcode, OPSIZE *operand_l, OPSIZE *operand_r, OPSIZE *result);
  43 uint32 fp_exec   (uint16 opcode, OP *result, OP operand_l, OP operand_r);
  44 OP     fp_accum  (const OP *operand, OPSIZE precision);
  45 uint32 fp_pack   (OP *result, OP mantissa, int32 exponent, OPSIZE precision);
  46 uint32 fp_nrpack (OP *result, OP mantissa, int32 exponent, OPSIZE precision);
  47 uint32 fp_unpack (OP *mantissa, int32 *exponent, OP packed, OPSIZE precision);
  48 uint32 fp_ucom   (OP *mantissa, OPSIZE precision);
  49 uint32 fp_pcom   (OP *packed, OPSIZE precision);
  50 uint32 fp_trun   (OP *result, OP source, OPSIZE precision);
  51 uint32 fp_cvt    (OP *result, OPSIZE source_precision, OPSIZE dest_precision);
  52
  53 #endif