Tedd OKANO / Mbed 2 deprecated RPN_calc__based_on_K_and_R

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Dependencies:   mbed

stack.cpp@4:b4c8aee2ecad, 2015-06-27 (annotated)

Committer:
okano
Date:
Sat Jun 27 01:21:34 2015 +0000
Revision:
4:b4c8aee2ecad
Parent:
3:4ef74510cc5b 
tweaked for better display

Who changed what in which revision?

UserRevisionLine numberNew contents of line
okano 2:0e96f4495b43 1 #include "mbed.h"
okano 2:0e96f4495b43 2 #include "calc.h"
okano 2:0e96f4495b43 3
okano 2:0e96f4495b43 4 #define MAXVAL 100
okano 2:0e96f4495b43 5
okano 2:0e96f4495b43 6 int sp = 0;
okano 2:0e96f4495b43 7 double val[ MAXVAL ];
okano 2:0e96f4495b43 8
okano 2:0e96f4495b43 9 void push( double f )
okano 2:0e96f4495b43 10 {
okano 2:0e96f4495b43 11 if ( sp < MAXVAL )
okano 2:0e96f4495b43 12 val[ sp++ ] = f;
okano 2:0e96f4495b43 13 else
okano 2:0e96f4495b43 14 printf( "error: stack full, can't push %g\n", f );
okano 2:0e96f4495b43 15 }
okano 2:0e96f4495b43 16
okano 2:0e96f4495b43 17
okano 2:0e96f4495b43 18 double pop( void )
okano 2:0e96f4495b43 19 {
okano 2:0e96f4495b43 20 if ( sp > 0 )
okano 2:0e96f4495b43 21 return val[ --sp ];
okano 2:0e96f4495b43 22 else {
okano 2:0e96f4495b43 23 printf( "error: stack empty\n" );
okano 2:0e96f4495b43 24 return 0.0;
okano 2:0e96f4495b43 25 }
okano 2:0e96f4495b43 26 }
okano 3:4ef74510cc5b 27
okano 3:4ef74510cc5b 28 void show_stack( void )
okano 3:4ef74510cc5b 29 {
okano 3:4ef74510cc5b 30 for ( int i = 0; i < sp; i++ )
okano 4:b4c8aee2ecad 31 printf( "%3d: %f\n", ((sp - 1) - i), val[ i ] );
okano 3:4ef74510cc5b 32 }