Help with BDSC float

[bert at infoswx.UUCP]

About float in BDSC. (I'm talking about the CPM version that I have used)

Basically, BDSC does not have float.  There is a library of float
functions available that will allow you to do some floating point
operations with some difficulty.  To use them, you must declare a 5 char
array for each float variable.  You assign it a value with a function.
You play with it with other functions.  Then you can print it with
a special printf routine that you must link in specifically to handle
the %e and %f control strings.  But don't try to use fprintf if you
link the float printf stuff in, it doesn't work on the version I have.

examples:

char float1[5], float2[5];
buf[30];

atof(float1, "10.0");        /* set float to 10.0 */

fpadd(float1, float1, atof(float2, "5.0");     /* add 5 to it */

fpsub(float1, float1, atof(float2, "2.0");     /* subtract 2 from it */

fpmult(float1, float1, float2);			/* multiply it by 5 */

fpdiv(float1, float1, float2);			/* divide it by 5 */

ftoa(buf, float1);				/* make ascii (%e format) */

printf("%f %s\n", float1, buf);				/* print it (%f, %e) */

Note that the result is left in the first arg on all the arith operations.
Also, they all return char * to the result.

Bert Campbell.