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- /* Copyright (c) 1990 Commodore-Amiga, Inc.
- *
- * This example is provided in electronic form by Commodore-Amiga, Inc. for
- * use with the 1.3 revisions of the Addison-Wesley Amiga reference manuals.
- * The 1.3 Addison-Wesley Amiga Reference Manual series contains additional
- * information on the correct usage of the techniques and operating system
- * functions presented in this example. The source and executable code of
- * this example may only be distributed in free electronic form, via bulletin
- * board or as part of a fully non-commercial and freely redistributable
- * diskette. Both the source and executable code (including comments) must
- * be included, without modification, in any copy. This example may not be
- * published in printed form or distributed with any commercial product.
- * However, the programming techniques and support routines set forth in
- * this example may be used in the development of original executable
- * software products for Commodore Amiga computers.
- * All other rights reserved.
- * This example is provided "as-is" and is subject to change; no warranties
- * are made. All use is at your own risk. No liability or responsibility
- * is assumed.
- */
-
- /* FFPConv.c
- * Compiled with Lattice C 5.04: LC -b1 -cfist -ffs -v -y
- * Linkage: c.o+FFPConv.o TO FFPConv Library lib:lcmffp.lib+lib:lc.lib+lib:amiga.lib
- */
-
- #include <exec/types.h>
- #include <libraries/mathffp.h>
- #ifdef LATTICE
- #include <stdio.h>
- #include <proto/all.h>
- #endif
-
- struct Library *MathBase;
-
- UBYTE st1[80] = "3.1415926535897";
- UBYTE st2[80] = "2.718281828459045";
- UBYTE st3[80], st4[80];
-
- VOID main() {
-
- FLOAT num1, num2;
- FLOAT n1, n2, n3, n4;
- LONG exp1, exp2, exp3, exp4;
- LONG mant1, mant2, mant3, mant4;
- LONG place1, place2;
-
- if((MathBase = OpenLibrary("mathffp.library", 0)) == 0) {
- printf("Can't open mathffp.library\n");
- exit(20);
- }
-
-
- n1 = afp(st1); /* Call afp entry */
- n2 = afp(st2); /* Call afp entry */
- printf("\n\nASCII %s converts to floating point %f",
- st1, n1);
- printf("\nASCII %s converts to floating point %f",
- st2, n2);
-
- num1 = 3.1415926535897;
- num2 = 2.718281828459045;
-
- exp1 = fpa(num1, st3); /* Call fpa entry */
- exp2 = fpa(num2, st4); /* Call fpa entry */
- printf("\n\nfloating point %f converts to ASCII %s", num1, st3);
- printf("\nfloating point %f converts to ASCII %s",
- num2, st4);
-
- place1 = -2;
- place2 = -1;
- arnd(place1, exp1, st3); /* Call arnd entry */
- arnd(place2, exp2, st4); /* Call arnd entry */
- printf("\nASCII round of %f to %d places yields %s",
- num1, place1, st3);
- printf("\nASCII round of %f to %d places yields %s",
- num2, place2, st4);
-
- exp1 = -3; exp2 = 3; exp3 = -3; exp4 = 3;
- mant1 = 12345; mant2 = -54321; mant3 = -12345; mant4 = 54321;
-
- n1 = dbf(exp1, mant1); /* Call dbf entry */
- n2 = dbf(exp2, mant2); /* Call dbf entry */
- n3 = dbf(exp3, mant3); /* Call dbf entry */
- n4 = dbf(exp4, mant4); /* Call dbf entry */
- printf("\n\ndbf of exp = %d and mant = %d yields FFP number of %f",
- exp1, mant1, n1);
- printf("\ndbf of exp = %d and mant = %d yields FFP number of %f",
- exp2, mant2, n2);
- printf("\ndbf of exp = %d and mant = %d yields FFP number of %f",
- exp3, mant3, n3);
- printf("\ndbf of exp = %d and mant = %d yields FFP number of %f",
- exp4, mant4, n4);
-
- CloseLibrary(MathBase);
- }
-