MATHEMATIC ROUTINES: CHECKING SIGN / UNSIGN CONVERSION - example - ugBASIC

MATHEMATIC ROUTINES: CHECKING SIGN / UNSIGN CONVERSION

This example allows you to verify that the assignment between signed and unsigned integer types works correctly.

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SOURCE CODE ()

CLS

DIM sb AS SIGNED BYTE, ub AS BYTE
DIM sw AS SIGNED WORD, uw AS WORD
DIM sd AS SIGNED DWORD, ud AS DWORD

PRINT " 8>16) ";
sb = -42: sw = sb: IF sw <> -42 THEN: PRINT "(1)";: ENDIF
sb = -42: uw = sb: IF uw <> $FFD6 THEN: PRINT "(2)";: ENDIF
ub = 192: sw = ub: IF sw <> 192 THEN: PRINT "(3)";: ENDIF
ub = 192: uw = ub: IF uw <> 192 THEN: PRINT "(4)";: ENDIF
PRINT

PRINT " 8>32) ";
sb = -42: sd = sb: IF sd <> -42 THEN: PRINT "(1)";: ENDIF
sb = -42: ud = sb: IF ud <> $FFFFFFD6 THEN: PRINT "(2)";:ENDIF
ub = 42: sd = ub: IF sd <> 42 THEN: PRINT "(3)";: ENDIF
ub = 42: ud = ub: IF ud <> 42 THEN: PRINT "(4)";: ENDIF
PRINT

PRINT "16> 8) ";
sw = -42: sb = sw: IF sb <> -42 THEN: PRINT "(1)";: ENDIF
sw = -42: ub = sw: IF ub <> $D6 THEN: PRINT "(2)";: ENDIF
uw = 42: sb = uw: IF sb <> 42 THEN: PRINT "(3)";: ENDIF
uw = 42: ub = uw: IF ub <> 42 THEN: PRINT "(4)";: ENDIF
PRINT

PRINT "16>32) ";
sw = -42: sd = sw: IF sd <> -42 THEN: PRINT "(1)";: ENDIF
sw = -42: ud = sw: IF ud <> $FFFFFFD6 THEN: PRINT "(2)";: ENDIF
uw = 42: sd = uw: IF sd <> 42 THEN: PRINT "(3)";: ENDIF
uw = 42: ud = uw: IF ud <> 42 THEN: PRINT "(4)";: ENDIF
PRINT

PRINT "32> 8) ";
sd = -42: sb = sd: IF sb <> -42 THEN: PRINT "(1)";: ENDIF
sd = -42: ub = sd: IF ub <> $D6 THEN: PRINT "(2)";: ENDIF
ud = 42: sb = ud: IF sb <> 42 THEN: PRINT "(3)";: ENDIF
ud = 42: ub = ud: IF ub <> 42 THEN: PRINT "(4)";: ENDIF
PRINT

PRINT "32>16) ";
sd = -42: sw = sd: IF sw <> -42 THEN: PRINT "(1)";: ENDIF
sd = -42: uw = sd: IF uw <> $FFD6 THEN: PRINT "(2) = ";uw: ENDIF
ud = 42: sw = ud: IF sw <> 42 THEN: PRINT "(3)";: ENDIF
ud = 42: uw = ud: IF uw <> 42 THEN: PRINT "(4)";: ENDIF
PRINT

How to compile and run the example

The instructions here refer to compiling the example from the command line. For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile each single example with just one click.

Are instructions for your specific home computer / console missing? First of all, check if your computer is supported by clicking here. If so, since ugBASIC is a language which does not provide abstractions, it is possible that this example will not work on your target. If you think this is an issue, please click here.

Amstrad CPC 464, Amstrad CPC 6128, Amstrad CPC 664

In order to compile the example, type this command on the command line:

Linux

ugbc.cpc -O dsk -o maths_relative_04.dsk maths_relative_04.bas

Windows

ugbc.cpc.exe -O dsk -o maths_relative_04.dsk maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Atari 1200XL, Atari 130XE, Atari 600XL, Atari 65XE, Atari 800XE, Atari 800XL, Atari XEGS

In order to compile the example, type this command on the command line:

Linux

ugbc.atarixl -O xex -o maths_relative_04.xex maths_relative_04.bas

Windows

ugbc.atarixl.exe -O xex -o maths_relative_04.xex maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Atari 400, Atari 800

In order to compile the example, type this command on the command line:

Linux

ugbc.atari -O xex -o maths_relative_04.xex maths_relative_04.bas

Windows

ugbc.atari.exe -O xex -o maths_relative_04.xex maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Coleco Vision, Dina (Chuang Zao Zhe 50), SpectraVideo SV-603 VGA

In order to compile the example, type this command on the command line:

Linux

ugbc.coleco -O rom -o maths_relative_04.rom maths_relative_04.bas

Windows

ugbc.coleco.exe -O rom -o maths_relative_04.rom maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Commodore 128 (CPU 8502)

In order to compile the example, type this command on the command line:

Linux

ugbc.c128 -O prg -o maths_relative_04.prg maths_relative_04.bas

Windows

ugbc.c128.exe -O prg -o maths_relative_04.prg maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Commodore 128 (CPU Z80)

In order to compile the example, type this command on the command line:

Linux

ugbc.c128z -O prg -o maths_relative_04.prg maths_relative_04.bas

Windows

ugbc.c128z.exe -O prg -o maths_relative_04.prg maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Commodore 64, Commodore Executive 64

In order to compile the example, type this command on the command line:

Linux

ugbc.c64 -O prg -o maths_relative_04.prg maths_relative_04.bas

Windows

ugbc.c64.exe -O prg -o maths_relative_04.prg maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Dragon 32

In order to compile the example, type this command on the command line:

Linux

ugbc.d32 -O bin -o maths_relative_04.bin maths_relative_04.bas

Windows

ugbc.d32.exe -O bin -o maths_relative_04.bin maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Dragon 64

In order to compile the example, type this command on the command line:

Linux

ugbc.d64 -O bin -o maths_relative_04.bin maths_relative_04.bas

Windows

ugbc.d64.exe -O bin -o maths_relative_04.bin maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

MSX

In order to compile the example, type this command on the command line:

Linux

ugbc.msx1 -O rom -o maths_relative_04.rom maths_relative_04.bas

Windows

ugbc.msx1.exe -O rom -o maths_relative_04.rom maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Olivetti Prodest PC128, Thomson MO6

In order to compile the example, type this command on the command line:

Linux

ugbc.pc128op -O k7 -o maths_relative_04.k7 maths_relative_04.bas

Windows

ugbc.pc128op.exe -O k7 -o maths_relative_04.k7 maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Plus/4

In order to compile the example, type this command on the command line:

Linux

ugbc.plus4 -O prg -o maths_relative_04.prg maths_relative_04.bas

Windows

ugbc.plus4.exe -O prg -o maths_relative_04.prg maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

SEGA SC-3000

In order to compile the example, type this command on the command line:

Linux

ugbc.sc3000 -O rom -o maths_relative_04.rom maths_relative_04.bas

Windows

ugbc.sc3000.exe -O rom -o maths_relative_04.rom maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

SEGA SG-1000

In order to compile the example, type this command on the command line:

Linux

ugbc.sg1000 -O rom -o maths_relative_04.rom maths_relative_04.bas

Windows

ugbc.sg1000.exe -O rom -o maths_relative_04.rom maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

TRS-80 Color Computer, TRS-80 Color Computer 2

In order to compile the example, type this command on the command line:

Linux

ugbc.coco -O bin -o maths_relative_04.bin maths_relative_04.bas

Windows

ugbc.coco.exe -O bin -o maths_relative_04.bin maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

TRS-80 Color Computer 3

In order to compile the example, type this command on the command line:

Linux

ugbc.coco3 -O bin -o maths_relative_04.bin maths_relative_04.bas

Windows

ugbc.coco3.exe -O bin -o maths_relative_04.bin maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Thomson MO5

In order to compile the example, type this command on the command line:

Linux

ugbc.mo5 -O k7 -o maths_relative_04.k7 maths_relative_04.bas

Windows

ugbc.mo5.exe -O k7 -o maths_relative_04.k7 maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Thomson TO8

In order to compile the example, type this command on the command line:

Linux

ugbc.to8 -O k7 -o maths_relative_04.k7 maths_relative_04.bas

Windows

ugbc.to8.exe -O k7 -o maths_relative_04.k7 maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

ZX Spectrum +2, ZX Spectrum 128K, ZX Spectrum 48K

In order to compile the example, type this command on the command line:

Linux

ugbc.zx -O tap -o maths_relative_04.tap maths_relative_04.bas

Windows

ugbc.zx.exe -O tap -o maths_relative_04.tap maths_relative_04.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Any problem?

If you have found a problem trying to run this example, if you think there is a bug or, more simply, you would like it to be improved, open an issue for this example on GitHub.
Thank you!

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