File Coverage

lib/PDL/Math-pp-pow.c

Criterion	Covered	Total	%
statement	34	205	16.5
branch	58	1512	3.8
condition			n/a
subroutine			n/a
pod			n/a
total	92	1717	5.3

#line 453 "lib/PDL/PP.pm"
/*
 * THIS FILE WAS GENERATED BY PDL::PP from lib/PDL/Math.pd! Do not modify!
 */

#define PDL_FREE_CODE(trans, destroy, comp_free_code, ntpriv_free_code) \
    if (destroy) { \
	comp_free_code \
    } \
    if ((trans)->dims_redone) { \
	ntpriv_free_code \
    }

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "pdl.h"
#include "pdlcore.h"
#define PDL PDL_Math
extern Core* PDL; /* Structure hold core C functions */
#line 23 "lib/PDL/Math-pp-pow.c"

#include
#include "protos.h"
#include "cpoly.h"

#line 1857 "lib/PDL/PP.pm"
pdl_error pdl_pow_readdata(pdl_trans *__privtrans) {
  pdl_error PDL_err = {0, NULL, 0};
#line 32 "lib/PDL/Math-pp-pow.c"
  if (!__privtrans->broadcast.incs) return PDL->make_error(PDL_EUSERERROR, "Error in pow:" "broadcast.incs NULL");
  /* broadcastloop declarations */
  int __brcloopval;
  register PDL_Indx __tind0,__tind1; /* counters along dim */
  register PDL_Indx __tnpdls = __privtrans->broadcast.npdls;
  /* dims here are how many steps along those dims */
  register PDL_Indx __tinc0_a = PDL_BRC_INC(__privtrans->broadcast.incs,__tnpdls,0,0);
  register PDL_Indx __tinc0_b = PDL_BRC_INC(__privtrans->broadcast.incs,__tnpdls,1,0);
  register PDL_Indx __tinc0_c = PDL_BRC_INC(__privtrans->broadcast.incs,__tnpdls,2,0);
  register PDL_Indx __tinc1_a = PDL_BRC_INC(__privtrans->broadcast.incs,__tnpdls,0,1);
  register PDL_Indx __tinc1_b = PDL_BRC_INC(__privtrans->broadcast.incs,__tnpdls,1,1);
  register PDL_Indx __tinc1_c = PDL_BRC_INC(__privtrans->broadcast.incs,__tnpdls,2,1);
  #define PDL_BROADCASTLOOP_START_pow_readdata PDL_BROADCASTLOOP_START( \
    readdata, \
    __privtrans->broadcast, \
    __privtrans->vtable, \
    a_datap += __offsp[0]; \
    b_datap += __offsp[1]; \
    c_datap += __offsp[2]; \
    , \
    (  ,a_datap += __tinc1_a - __tinc0_a * __tdims0 \
    ,b_datap += __tinc1_b - __tinc0_b * __tdims0 \
    ,c_datap += __tinc1_c - __tinc0_c * __tdims0 \
    ), \
    (  ,a_datap += __tinc0_a \
    ,b_datap += __tinc0_b \
    ,c_datap += __tinc0_c \
    ) \
  )
  #define PDL_BROADCASTLOOP_END_pow_readdata PDL_BROADCASTLOOP_END( \
    __privtrans->broadcast, \
    a_datap -= __tinc1_a * __tdims1 + __offsp[0]; \
    b_datap -= __tinc1_b * __tdims1 + __offsp[1]; \
    c_datap -= __tinc1_c * __tdims1 + __offsp[2]; \
  )
  #ifndef PDL_DECLARE_PARAMS_pow_1
  #define PDL_DECLARE_PARAMS_pow_1(PDL_TYPE_OP,PDL_PPSYM_OP) \
    PDL_DECLARE_PARAMETER_BADVAL(PDL_TYPE_OP, a, (__privtrans->pdls[0]), 1, PDL_PPSYM_OP) \
    PDL_DECLARE_PARAMETER_BADVAL(PDL_TYPE_OP, b, (__privtrans->pdls[1]), 1, PDL_PPSYM_OP) \
    PDL_DECLARE_PARAMETER_BADVAL(PDL_TYPE_OP, c, (__privtrans->pdls[2]), 1, PDL_PPSYM_OP)
  #endif
  if ( __privtrans->bvalflag ) { /* ** do 'bad' Code ** */
    #define PDL_BAD_CODE
    #define PDL_IF_BAD(t,f) t
    switch (__privtrans->__datatype) { /* Start generic switch */
      case PDL_SB: {
        PDL_DECLARE_PARAMS_pow_1(PDL_SByte,A)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,A,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,A,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_B: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Byte,B)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,B,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,B,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_S: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Short,S)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,S,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,S,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_US: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Ushort,U)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,U,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,U,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_L: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Long,L)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,L,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,L,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_UL: {
        PDL_DECLARE_PARAMS_pow_1(PDL_ULong,K)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,K,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,K,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_IND: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Indx,N)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,N,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,N,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_ULL: {
        PDL_DECLARE_PARAMS_pow_1(PDL_ULongLong,P)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,P,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,P,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_LL: {
        PDL_DECLARE_PARAMS_pow_1(PDL_LongLong,Q)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,Q,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,Q,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_F: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Float,F)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,F,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,F,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_D: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Double,D)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,D,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,D,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_LD: {
        PDL_DECLARE_PARAMS_pow_1(PDL_LDouble,E)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,E,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,E,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_CF: {
        PDL_DECLARE_PARAMS_pow_1(PDL_CFloat,G)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,G,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,G,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_CD: {
        PDL_DECLARE_PARAMS_pow_1(PDL_CDouble,C)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,C,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,C,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_CLD: {
        PDL_DECLARE_PARAMS_pow_1(PDL_CLDouble,H)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,H,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,H,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      default: return PDL->make_error(PDL_EUSERERROR, "PP INTERNAL ERROR in pow: unhandled datatype(%d), only handles (ABSULKNPQFDEGCH)! PLEASE MAKE A BUG REPORT\n", __privtrans->__datatype);
    }
    #undef PDL_BAD_CODE
    #undef PDL_IF_BAD
  } else { /* ** else do 'good' Code ** */
    #define PDL_IF_BAD(t,f) f
    switch (__privtrans->__datatype) { /* Start generic switch */
      case PDL_SB: {
        PDL_DECLARE_PARAMS_pow_1(PDL_SByte,A)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,A,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,A,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_B: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Byte,B)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,B,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,B,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_S: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Short,S)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,S,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,S,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_US: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Ushort,U)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,U,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,U,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_L: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Long,L)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,L,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,L,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_UL: {
        PDL_DECLARE_PARAMS_pow_1(PDL_ULong,K)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,K,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,K,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_IND: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Indx,N)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,N,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,N,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_ULL: {
        PDL_DECLARE_PARAMS_pow_1(PDL_ULongLong,P)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,P,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,P,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_LL: {
        PDL_DECLARE_PARAMS_pow_1(PDL_LongLong,Q)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,Q,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,Q,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_F: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Float,F)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,F,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,F,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_D: {
        PDL_DECLARE_PARAMS_pow_1(PDL_Double,D)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,D,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,D,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_LD: {
        PDL_DECLARE_PARAMS_pow_1(PDL_LDouble,E)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,E,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,E,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_CF: {
        PDL_DECLARE_PARAMS_pow_1(PDL_CFloat,G)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,G,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,G,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_CD: {
        PDL_DECLARE_PARAMS_pow_1(PDL_CDouble,C)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,C,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,C,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      case PDL_CLD: {
        PDL_DECLARE_PARAMS_pow_1(PDL_CLDouble,H)
        PDL_BROADCASTLOOP_START_pow_readdata    {PDL_IF_BAD(if ( PDL_ISBAD2((a_datap)[0],a_badval,H,a_badval_isnan) || PDL_ISBAD2((b_datap)[0],b_badval,H,b_badval_isnan) ) { (c_datap)[0]=c_badval; } else,)
              (c_datap)[0] = pow((a_datap)[0],(b_datap)[0]);
            }PDL_BROADCASTLOOP_END_pow_readdata
      } break;
      default: return PDL->make_error(PDL_EUSERERROR, "PP INTERNAL ERROR in pow: unhandled datatype(%d), only handles (ABSULKNPQFDEGCH)! PLEASE MAKE A BUG REPORT\n", __privtrans->__datatype);
    }
    #undef PDL_IF_BAD
  }
  return PDL_err;
}

static pdl_datatypes pdl_pow_vtable_gentypes[] = { PDL_CF, PDL_CD, PDL_CLD, PDL_SB, PDL_B, PDL_S, PDL_US, PDL_L, PDL_UL, PDL_IND, PDL_ULL, PDL_LL, PDL_F, PDL_D, PDL_LD, -1 };
static PDL_Indx pdl_pow_vtable_realdims[] = { 0, 0, 0 };
static char *pdl_pow_vtable_parnames[] = { "a","b","c" };
static short pdl_pow_vtable_parflags[] = {
  0,
  0,
  PDL_PARAM_ISCREAT|PDL_PARAM_ISOUT|PDL_PARAM_ISWRITE
};
static pdl_datatypes pdl_pow_vtable_partypes[] = { -1, -1, -1 };
static PDL_Indx pdl_pow_vtable_realdims_starts[] = { 0, 0, 0 };
static PDL_Indx pdl_pow_vtable_realdims_ind_ids[] = { 0 };
static char *pdl_pow_vtable_indnames[] = { "" };
pdl_transvtable pdl_pow_vtable = {
  PDL_TRANS_DO_BROADCAST|PDL_TRANS_BADPROCESS, 0, pdl_pow_vtable_gentypes, 2, 3, NULL /*CORE21*/,
  pdl_pow_vtable_realdims, pdl_pow_vtable_parnames,
  pdl_pow_vtable_parflags, pdl_pow_vtable_partypes,
  pdl_pow_vtable_realdims_starts, pdl_pow_vtable_realdims_ind_ids, 0,
  0, pdl_pow_vtable_indnames,
  NULL, pdl_pow_readdata, NULL,
  NULL,
  0,"PDL::Math::pow"
};


pdl_error pdl_run_pow(pdl  *a,pdl  *b,pdl  *c) {
  pdl_error PDL_err = {0, NULL, 0};
  if (!PDL) return (pdl_error){PDL_EFATAL, "PDL core struct is NULL, can't continue",0};
  pdl_trans *__privtrans = PDL->create_trans(&pdl_pow_vtable);
  if (!__privtrans) return PDL->make_error_simple(PDL_EFATAL, "Couldn't create trans");
  __privtrans->pdls[0] = a;
  __privtrans->pdls[1] = b;
  __privtrans->pdls[2] = c;
  PDL_RETERROR(PDL_err, PDL->type_coerce(__privtrans));
  PDL_RETERROR(PDL_err, PDL->make_trans_mutual(__privtrans));
  return PDL_err;
}