Re: Suggestion: c library access

Re: Suggestion: c library access

[Sven Wischnowsky]

Jan Kroken wrote:

> I have a suggestion for a (far) future Zsh enhancement. What if you
> could load libraries, and call functions from them on the command line?
> 
> Imagine the following script which uses a function float pow(float,float):

Well, this special case is already handled with the mathfunc
module. Otherwise... interesting idea, are you volunteering?

This reminded me: mathfunc uses drem(), but at least the Solaris 5.6 I 
have access to here doesn't seem to have that.

Bye
 Sven


--
Sven Wischnowsky                         wischnow@informatik.hu-berlin.de

Re: Suggestion: c library access

[Peter Stephenson]

Sven Wischnowsky wrote:
> This reminded me: mathfunc uses drem(), but at least the Solaris 5.6 I 
> have access to here doesn't seem to have that.

It's not worth testing for, let's remove it.

--- Doc/Zsh/mod_mathfunc.yo.mf	Mon Dec 20 21:50:37 1999
+++ Doc/Zsh/mod_mathfunc.yo	Mon Dec 20 21:50:06 1999
@@ -37,7 +37,7 @@
 expresssions.
 
 The following functions take two floating point arguments: tt(copysign),
-tt(drem), tt(fmod), tt(hypot), tt(nextafter).
+tt(fmod), tt(hypot), tt(nextafter).
 
 The following take an integer first argument and a floating point second
 argument: tt(jn), tt(yn).
--- Src/Modules/mathfunc.c.mf	Mon Dec 20 21:22:36 1999
+++ Src/Modules/mathfunc.c	Mon Dec 20 21:49:51 1999
@@ -45,7 +45,6 @@
 MF_COPYSIGN,
 MF_COS,
 MF_COSH,
-MF_DREM,
 MF_ERF,
 MF_ERFC,
 MF_EXP,
@@ -131,7 +130,6 @@
   NUMMATHFUNC("copysign", math_func, 2, 2, MF_COPYSIGN),
   NUMMATHFUNC("cos", math_func, 1, 1, MF_COS),
   NUMMATHFUNC("cosh", math_func, 1, 1, MF_COSH),
-  NUMMATHFUNC("drem", math_func, 2, 2, MF_DREM),
   NUMMATHFUNC("erf", math_func, 1, 1, MF_ERF),
   NUMMATHFUNC("erfc", math_func, 1, 1, MF_ERFC),
   NUMMATHFUNC("exp", math_func, 1, 1, MF_EXP),
@@ -294,10 +292,6 @@
 
   case MF_COSH:
       retd = cosh(argd);
-      break;
-
-  case MF_DREM:
-      retd = drem(argd, argd2);
       break;
 
   case MF_ERF:

-- 
Peter Stephenson <pws@pwstephenson.fsnet.co.uk>

Suggestion: c library access

[Jan Kroken]

I have a suggestion for a (far) future Zsh enhancement. What if you
could load libraries, and call functions from them on the command line?

Imagine the following script which uses a function float pow(float,float):

---BEGIN---
#!/bin/zsh
LIBM 0 $(((load-library libm)))

return_function c_pow (){
  Y=$(((float-to-shell $(((exec-library-function $LIBM "pow" \
						 $(((shell-to-float $1))) \
						 $(((shell-to-float $2)))))))))
  return Y
}

A=2.0 B=2.0
C=$(c_pow $A $B)

$(((free-library $LIBM)))
---END---

would this be an idea?

-- 
                                                     -jk

Re: Suggestion: c library access

[Mike Fletcher]

>>>>> "Jan" == Jan Kroken <jankr@ifi.uio.no> writes:

    Jan> I have a suggestion for a (far) future Zsh enhancement. What
    Jan> if you could load libraries, and call functions from them on
    Jan> the command line?

        If you've got a perl XS wrapper for your library, you could
use the embedded perl module to use that from zsh.

http://www.phydeaux.org/perl/zperl-0.01.patch.gz

        This was back against plain 3.1.6, so it might not work
against pws-12.  Of course I'm going on vacation for a week+ in a
little while so version 0.02 probably will work with pws-12 soon. :)

-- 
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fletch@phydeaux.org   |  Vincent, you should cease askin'          \ o.O'
678 443-6239(w)       |  scary questions." -- Jules                =(___)=
                      |                                               U