mirror of
https://github.com/GnoConsortium/gno.git
synced 2024-12-21 23:29:16 +00:00
f3bea84880
found to reflect the directories now recommended in the FAQ. - added a resource fork with an rVersion. - use catrez instead of copyfork - make 'install' and 'release' targets consistent with the rest of the GNO builds.
246 lines
7.1 KiB
Plaintext
246 lines
7.1 KiB
Plaintext
SANE Glue Code for ORCA/C 2.1 or later
|
|
Written in 1997 by Soenke Behrens
|
|
|
|
Legal Stuff
|
|
===========
|
|
|
|
This library and the accompanying source code are hereby placed
|
|
into the Public Domain. There is no warranty, express or implied,
|
|
on the performance of the library or source code. The author is not
|
|
liable for any damage that may occur as a direct or indirect result
|
|
of using the library or source code.
|
|
|
|
Installation
|
|
============
|
|
|
|
In GNO/ME, run "dmake install".
|
|
This will copy a changed sane.h to /usr/include and the library
|
|
lsaneglue to 13.
|
|
If, on your system, includes are kept in a different directory (say
|
|
13/orcacdefs), either copy the files manually or edit the file
|
|
"makefile" to use a different path.
|
|
|
|
In ORCA/Shell, copy the changed include file and the library
|
|
manually.
|
|
|
|
Afterwards, use a directory ordering utility such as ProSel-16
|
|
to make sure lsaneglue comes _before_ ORCALIB.
|
|
|
|
Documentation, Use
|
|
==================
|
|
|
|
lsaneglue is a library that contains code to let you call
|
|
SANE functions directly from ORCA/C. To avoid namespace
|
|
conflicts with math.h, it was necessary to change sane.h.
|
|
Thus, all SANE functions are now prefixed with "s_" (e.g.
|
|
"annuity" became "s_annuity", and "sin" became "s_sin").
|
|
This lets you choose easily between the SANE and ISO/C
|
|
implementations of the same function.
|
|
|
|
Below you will find a brief overview over the functions in
|
|
lsaneglue. This overview does not replace, however, proper
|
|
documentation. To fully understand SANE, you will need the
|
|
"Apple Numerics Manual, 2nd Edition" by Apple Computer, Inc.,
|
|
ISBN 0-201-17738-2, published by Addison-Wesley Publishing
|
|
Company, Inc.
|
|
SANE is also introduced in the "Apple IIgs Toolbox Reference,
|
|
Volume 2", Chapter 18.
|
|
|
|
I find the functions to control the SANE environment (rounding
|
|
direction, halts &c.), the functions to spot NaNs (classification
|
|
functions) as well as the functions that give you a good pi, NaN
|
|
and INF particularly useful.
|
|
|
|
Brief SANE function overview
|
|
============================
|
|
|
|
There is one function in lsaneglue that has nothing to do with
|
|
SANE:
|
|
|
|
int findfpcp(void);
|
|
|
|
This function will find an FPE or NC card and return the slot number
|
|
(or -1 if card not found). You can use the output of this function
|
|
for the ORCA/C setfpeslot(), which is used when having ORCA/C
|
|
create code for the FPE/NC directly (#pragma float 1 1).
|
|
|
|
Now for the SANE interface functions.
|
|
I will give the prototype of the function, and a one-line description
|
|
on the following line. Page numbers refer to Apple Numerics Manual.
|
|
|
|
NB: Use the file "sane.h" itself as reference for constants used
|
|
to set/test exceptions, rounding direction, rounding precision,
|
|
number classes, ordering relations, formatting styles and NAN codes.
|
|
|
|
void s_num2dec(DecForm *f, extended x, Decimal *d);
|
|
Convert x to SANE decimal record. Pg 28
|
|
|
|
extended s_dec2num(Decimal *d);
|
|
Convert SANE decimal record to extended. Pg 28f
|
|
|
|
void s_str2dec(char *s, short *ix, Decimal *d, short *vp);
|
|
Convert string s to SANE decimal record. Pg 30f
|
|
|
|
void s_dec2str(DecForm *f, Decimal *d, char *s);
|
|
Convert SANE decimal record d to string. Pg 31ff
|
|
|
|
extended s_fabs(extended x);
|
|
Get the absolute of x (make sign positive). Pg 49
|
|
|
|
extended s_fneg(extended x);
|
|
Reverse sign of x. Pg 49
|
|
|
|
extended s_remainder(extended x, extended y, short *quo);
|
|
Get the remainder of x and y. Pg 46f
|
|
|
|
extended s_sqrt(extended x);
|
|
Compute square root of x. Pg 46
|
|
|
|
extended s_rint(extended x);
|
|
Round x to integer in current rounding direction. Pg 47
|
|
|
|
extended s_scalb(short n, extended x);
|
|
Return (x times 2^n). Pg 50
|
|
|
|
extended s_logb(extended x);
|
|
Compute binary exponent of normalized x. Pg 50
|
|
|
|
extended s_copysign(extended x, extended y);
|
|
Return y with sign of x. Pg 49
|
|
|
|
extended s_nextfloat(extended x, extended y);
|
|
Return next float number after x in direction of y. Pg 50
|
|
|
|
extended s_nextdouble(extended x, extended y);
|
|
Return next double number after x in direction of y. Pg 50
|
|
|
|
extended s_nextextended(extended x, extended y);
|
|
Return next extended number after x in direction of y. Pg 50
|
|
|
|
extended s_log2(extended x);
|
|
Return base-2 logarithm of x. Pg 62
|
|
|
|
extended s_log(extended x);
|
|
Return base-e (natural) logarithm of x. Pg 62
|
|
|
|
extended s_log1(extended x);
|
|
Return base-e (natural) logarithm of (x+1). Pg 62
|
|
|
|
extended s_exp2(extended x);
|
|
Return base-2 exponantial of x (2^x). Pg 63f
|
|
|
|
extended s_exp(extended x);
|
|
Return base-e (natural) exponantial of x (x^e). Pg 63f
|
|
|
|
extended s_exp1(extended x);
|
|
Return base-e (natural) exponantial of x, minus 1 (x^e - 1). Pg 63f
|
|
|
|
extended s_power(extended x, extended y);
|
|
Return x^y. Pg 63f
|
|
|
|
extended s_ipower(extended x, short i);
|
|
Return x^i. Pg 63f
|
|
|
|
extended s_compound(extended r, extended n);
|
|
Compute compound (1+r)^n. Pg 64f
|
|
|
|
extended s_annuity(extended r, extended n);
|
|
Compute annuity (1-(1+r)^n)/r. Pg 65
|
|
|
|
extended s_tan(extended x);
|
|
Return tangent of x. Pg 67f
|
|
|
|
extended s_sin(extended x);
|
|
Return sine of x. Pg 67
|
|
|
|
extended s_cos(extended x);
|
|
Return cosine of x. Pg 67
|
|
|
|
extended s_atan(extended x);
|
|
Return arctangent of x. Pg 67f
|
|
|
|
extended s_randomx(extended *x);
|
|
Return pseudorandom integer value with seed x. Pg 67
|
|
|
|
numclass s_classfloat(extended x);
|
|
Return classification of float x. Pg 44
|
|
|
|
numclass s_classdouble(extended x);
|
|
Return classification of double x. Pg 44
|
|
|
|
numclass s_classcomp(extended x);
|
|
Return classification of comp x. Pg 44
|
|
|
|
numclass s_classextended(extended);
|
|
Return classification of extended x. Pg 44
|
|
|
|
int s_signnum(extended x);
|
|
Return sign of x: 0 if positive, 1 if negative. Pg 44
|
|
|
|
void s_setexception(exception e, long b);
|
|
Clear or set SANE exceptions. Pg 54ff
|
|
|
|
long s_testexception(exception e);
|
|
Check whether SANE exception is currently set. Pg 54ff
|
|
|
|
void s_sethalt(exception e, long b);
|
|
Clear or set SANE exception halts. Pg 54ff
|
|
|
|
long s_testhalt(exception e);
|
|
Check whether SANE exception halt is currently set. Pg 54ff
|
|
|
|
void s_setround(rounddir r);
|
|
Set SANE rounding direction. Pg 52f
|
|
|
|
rounddir s_getround(void);
|
|
Get SANE rounding direction. Pg 52f
|
|
|
|
void s_setprecision(roundpre p);
|
|
Set SANE rounding precision. Pg 53
|
|
|
|
roundpre s_getprecision(void);
|
|
Get SANE rounding precision. Pg 53
|
|
|
|
void s_setenvironment(environment e);
|
|
Set SANE environment word. Pg 57
|
|
|
|
void s_getenvironment(environment *e);
|
|
Get SANE environment word. Pg 57
|
|
|
|
void s_procentry(environment *e);
|
|
Save SANE environment word, then default it. Pg 57
|
|
|
|
void s_procexit(environment e);
|
|
Restore SANE environment word, then signal exceptions. Pg 57
|
|
|
|
haltvector s_gethaltvector(void);
|
|
Get SANE halt vector. Pg 54
|
|
|
|
void s_sethaltvector(haltvector v);
|
|
Set SANE halt vector. Pg 54
|
|
|
|
relop s_relation(extended x, extended y);
|
|
Return relation of x to y. Pg 49
|
|
|
|
extended s_nan(unsigned char c);
|
|
Return NaN(c).
|
|
|
|
extended s_inf(void);
|
|
Return +INF (Infinity).
|
|
|
|
extended s_pi(void);
|
|
Return pi constant (3.141592653589793238512808959)
|
|
|
|
|
|
Errors in SANE toolkit
|
|
======================
|
|
|
|
The fclass functions should return the sign of the passed number
|
|
in n-bit and Y. They do not report the sign at all, though, which
|
|
has to be considered a bug. s_signnum() has been rewritten to not
|
|
rely on fclassx any more.
|
|
|
|
Soenke Behrens
|
|
September 1997
|
|
sbehrens@bigfoot.com
|