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39 lines
1.5 KiB
C
39 lines
1.5 KiB
C
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/* ------------------------------------------------------------------ */
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/* Decimal Number Library Demonstration program */
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/* ------------------------------------------------------------------ */
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/* Copyright (c) IBM Corporation, 2001, 2007. All rights reserved. */
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/* ----------------------------------------------------------------+- */
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/* right margin -->| */
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// example1.c -- convert the first two argument words to decNumber,
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// add them together, and display the result
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#define DECNUMDIGITS 34 // work with up to 34 digits
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#include "decNumber.h" // base number library
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#include <stdio.h> // for printf
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int main(int argc, char *argv[]) {
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decNumber a, b; // working numbers
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decContext set; // working context
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char string[DECNUMDIGITS+14]; // conversion buffer
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decContextTestEndian(0); // warn if DECLITEND is wrong
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if (argc<3) { // not enough words
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printf("Please supply two numbers to add.\n");
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return 1;
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}
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decContextDefault(&set, DEC_INIT_BASE); // initialize
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set.traps=0; // no traps, thank you
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set.digits=DECNUMDIGITS; // set precision
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decNumberFromString(&a, argv[1], &set);
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decNumberFromString(&b, argv[2], &set);
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decNumberAdd(&a, &a, &b, &set); // a=a+b
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decNumberToString(&a, string);
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printf("%s + %s => %s\n", argv[1], argv[2], string);
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return 0;
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} // main
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