344 lines
8.9 KiB
C
344 lines
8.9 KiB
C
/*
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* $Id$
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*/
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/* Harbour Project source code
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http://www.Harbour-Project.org/
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The following function is Copyright 1999 David G. Holm:
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HB_ROUND().
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See doc/hdr_tpl.txt, Version 1.2 or later, for licensing terms.
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*/
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#include <math.h>
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#include "extend.h"
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#include "set.h"
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#include "errorapi.h"
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HARBOUR HB_ABS( void )
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{
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if( hb_pcount() == 1 )
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{
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PHB_ITEM pNumber = hb_param( 1, IT_NUMERIC );
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if( pNumber ) switch( pNumber->type )
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{
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case IT_INTEGER:
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if( pNumber->item.asInteger.value >= 0 )
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hb_retni( pNumber->item.asInteger.value );
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else
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hb_retni( -pNumber->item.asInteger.value );
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break;
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case IT_LONG:
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if( pNumber->item.asLong.value >= 0 )
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hb_retnl( pNumber->item.asLong.value );
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else
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hb_retnl( -pNumber->item.asLong.value );
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break;
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case IT_DOUBLE:
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if( pNumber->item.asDouble.value >= 0.0 )
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hb_retnd( pNumber->item.asDouble.value );
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else
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hb_retnd( -pNumber->item.asDouble.value );
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stack.Return.item.asDouble.decimal = pNumber->item.asDouble.decimal;
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}
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else
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hb_errRT_BASE( EG_ARG, 1089, NULL, "ABS" );
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}
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else
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hb_errRT_BASE( EG_ARGCOUNT, 3000, NULL, "ABS" ); /* NOTE: Clipper catches this at compile time! */
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}
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HARBOUR HB_EXP( void )
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{
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if( hb_pcount() == 1 )
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{
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if( ISNUM( 1 ) )
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{
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hb_retnd( exp( hb_parnd( 1 ) ) );
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/* Always set default number of decimals after EXP() */
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stack.Return.item.asDouble.decimal = hb_set.HB_SET_DECIMALS;
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}
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else
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hb_errRT_BASE( EG_ARG, 1096, NULL, "EXP" );
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}
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else
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hb_errRT_BASE( EG_ARGCOUNT, 3000, NULL, "EXP" ); /* NOTE: Clipper catches this at compile time! */
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}
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HARBOUR HB_INT( void )
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{
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if( hb_pcount() == 1 )
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{
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if( ISNUM( 1 ) )
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hb_retnl( hb_parnd( 1 ) );
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else
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hb_errRT_BASE( EG_ARG, 1090, NULL, "INT" );
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}
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else
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hb_errRT_BASE( EG_ARGCOUNT, 3000, NULL, "INT" ); /* NOTE: Clipper catches this at compile time! */
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}
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HARBOUR HB_LOG( void )
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{
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if( hb_pcount() == 1 )
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{
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if( ISNUM( 1 ) )
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{
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double dNumber = hb_parnd( 1 );
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hb_retnd( log( dNumber ) );
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/* Always set default number of decimals after LOG() */
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stack.Return.item.asDouble.decimal = hb_set.HB_SET_DECIMALS;
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if( dNumber <= 0.0 )
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/* Indicate overflow if called with an invalid argument */
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stack.Return.item.asDouble.length = 99;
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}
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else
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hb_errRT_BASE( EG_ARG, 1095, NULL, "LOG" );
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}
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else
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hb_errRT_BASE( EG_ARGCOUNT, 3000, NULL, "LOG" ); /* NOTE: Clipper catches this at compile time! */
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}
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/* returns the maximum of two date or numerics */
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HARBOUR HB_MAX( void )
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{
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if( hb_pcount() == 2 )
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{
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PHB_ITEM p1 = hb_param( 1, IT_ANY );
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PHB_ITEM p2 = hb_param( 2, IT_ANY );
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if( IS_NUMERIC( p1 ) && IS_NUMERIC( p2 ) )
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{
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WORD wType1 = p1->type;
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WORD wType2 = p1->type;
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/* NOTE: The order of these if() branches is significant, */
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/* Don't change it */
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if( wType1 == IT_DOUBLE || wType2 == IT_DOUBLE )
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{
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double d1 = hb_parnd( 1 );
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double d2 = hb_parnd( 2 );
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int iDec1 = ( wType1 == IT_DOUBLE ) ? p1->item.asDouble.decimal : 0;
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int iDec2 = ( wType2 == IT_DOUBLE ) ? p2->item.asDouble.decimal : 0;
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hb_retnd( d1 >= d2 ? d1 : d2 );
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stack.Return.item.asDouble.decimal = ( d1 >= d2 ? iDec1 : iDec2 );
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}
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else if( wType1 == IT_LONG || wType2 == IT_LONG )
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{
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long l1 = hb_parnl( 1 );
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long l2 = hb_parnl( 2 );
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hb_retnl( l1 >= l2 ? l1 : l2 );
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}
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else
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{
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int i1 = hb_parni( 1 );
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int i2 = hb_parni( 2 );
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hb_retni( i1 >= i2 ? i1 : i2 );
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}
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}
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else if( IS_DATE( p1 ) && IS_DATE( p2 ) )
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{
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long l1 = p1->item.asDate.value;
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long l2 = p2->item.asDate.value;
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hb_retds( l1 >= l2 ? hb_pards( 1 ) : hb_pards( 2 ) );
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}
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else
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hb_errRT_BASE( EG_ARG, 1093, NULL, "MAX" );
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}
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else
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hb_errRT_BASE( EG_ARGCOUNT, 3000, NULL, "MAX" ); /* NOTE: Clipper catches this at compile time! */
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}
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/* returns the minimum of two date or numerics */
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HARBOUR HB_MIN( void )
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{
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if( hb_pcount() == 2 )
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{
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PHB_ITEM p1 = hb_param( 1, IT_ANY );
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PHB_ITEM p2 = hb_param( 2, IT_ANY );
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if( IS_NUMERIC( p1 ) && IS_NUMERIC( p2 ) )
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{
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WORD wType1 = p1->type;
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WORD wType2 = p1->type;
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/* NOTE: The order of these if() branches is significant, */
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/* Don't change it */
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if( wType1 == IT_DOUBLE || wType2 == IT_DOUBLE )
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{
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double d1 = hb_parnd( 1 );
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double d2 = hb_parnd( 2 );
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int iDec1 = ( wType1 == IT_DOUBLE ) ? p1->item.asDouble.decimal : 0;
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int iDec2 = ( wType2 == IT_DOUBLE ) ? p2->item.asDouble.decimal : 0;
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hb_retnd( d1 <= d2 ? d1 : d2 );
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stack.Return.item.asDouble.decimal = ( d1 <= d2 ? iDec1 : iDec2 );
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}
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else if( wType1 == IT_LONG || wType2 == IT_LONG )
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{
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long l1 = hb_parnl( 1 );
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long l2 = hb_parnl( 2 );
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hb_retnl( l1 <= l2 ? l1 : l2 );
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}
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else
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{
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int i1 = hb_parni( 1 );
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int i2 = hb_parni( 2 );
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hb_retni( i1 <= i2 ? i1 : i2 );
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}
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}
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else if( IS_DATE( p1 ) && IS_DATE( p2 ) )
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{
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long l1 = p1->item.asDate.value;
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long l2 = p2->item.asDate.value;
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hb_retds( l1 <= l2 ? hb_pards( 1 ) : hb_pards( 2 ) );
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}
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else
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hb_errRT_BASE( EG_ARG, 1092, NULL, "MIN" );
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}
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else
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hb_errRT_BASE( EG_ARGCOUNT, 3000, NULL, "MIN" ); /* NOTE: Clipper catches this at compile time! */
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}
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/* TOFIX: In Clipper this is written in Clipper, see the source below, */
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/* and the error handling is NOT made here, but in the % operator */
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HARBOUR HB_MOD( void )
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{
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/*
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FUNCTION MOD(cl_num, cl_base)
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LOCAL cl_result
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cl_result = cl_num % cl_base
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RETURN IF( cl_base = 0, ;
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cl_num,;
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IF(cl_result * cl_base < 0, cl_result + cl_base, cl_result) )
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*/
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PHB_ITEM pNumber = hb_param( 1, IT_NUMERIC );
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if( pNumber && ISNUM( 2 ) )
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{
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double dNumber = hb_parnd( 1 );
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double dBase = hb_parnd( 2 ); /* dBase! Cool! */
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if( dBase )
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{
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double dResult = dNumber - ( ( long )( dNumber / dBase ) * dBase );
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if( dResult * dBase < 0 )
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hb_retnd( dResult + dBase );
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else
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hb_retnd( dResult );
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/* Always set default number of decimals after computing mod */
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stack.Return.item.asDouble.decimal = hb_set.HB_SET_DECIMALS;
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}
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else
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{
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hb_retnd( dNumber );
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/* Set the correct number of decimals */
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stack.Return.item.asDouble.decimal = pNumber->item.asDouble.decimal;
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}
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}
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else
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hb_errRT_BASE( EG_ARG, 1085, NULL, "%" );
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}
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double hb_numRound( double dResult, int iDec )
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{
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int iSize = 64;
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char * szResult;
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if( dResult != 0.0 )
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{
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double dAdjust;
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if( iDec == 0 )
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{
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dResult = floor( dResult + 0.5 );
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}
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else if( iDec < 0 )
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{
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dAdjust = pow( 10, -iDec );
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dResult = floor( dResult / dAdjust + 0.5 );
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dResult = dResult * dAdjust;
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}
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else
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{
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dAdjust = pow( 10, iDec );
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dResult = floor( dResult * dAdjust + 0.5 );
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dResult = dResult / dAdjust;
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}
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}
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szResult = ( char * ) hb_xgrab( iSize + iDec + 1 );
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if( szResult )
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{
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sprintf( szResult, "%*.*f", iSize, iDec, dResult );
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dResult = atof( szResult );
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hb_xfree( szResult );
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}
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return dResult;
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}
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HARBOUR HB_ROUND( void )
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{
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if( hb_pcount() == 2 )
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{
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if( ISNUM( 1 ) && ISNUM( 2 ) )
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{
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int iDec = hb_parni( 2 );
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hb_retnd( hb_numRound( hb_parnd( 1 ), iDec ) );
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stack.Return.item.asDouble.decimal = iDec;
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}
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else
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hb_errRT_BASE( EG_ARG, 1094, NULL, "ROUND" );
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}
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else
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hb_errRT_BASE( EG_ARGCOUNT, 3000, NULL, "ROUND" ); /* NOTE: Clipper catches this at compile time! */
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}
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HARBOUR HB_SQRT( void )
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{
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if( hb_pcount() == 1 )
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{
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if( ISNUM( 1 ) )
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{
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double dNumber = hb_parnd( 1 );
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if( dNumber > 0 )
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{
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hb_retnd( sqrt( dNumber ) );
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}
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else
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/* Clipper doesn't error! */
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hb_retnd( 0 );
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/* Always set default number of decimals after SQRT() */
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stack.Return.item.asDouble.decimal = hb_set.HB_SET_DECIMALS;
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}
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else
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hb_errRT_BASE( EG_ARG, 1097, NULL, "SQRT" );
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}
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else
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hb_errRT_BASE( EG_ARGCOUNT, 3000, NULL, "SQRT" ); /* NOTE: Clipper catches this at compile time! */
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}
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