R_MCINTI%UNHH.BITNET@mitvma.mit.edu (09/06/90)
> regarding the atof() problem in lattice "C"
The atof() seems to work fine; the difficulty is in the
printf() routine. I beleive with many vendors there are
two seperate printf() functions; one for interger math , and
one for double precision. It is perhaps the latter function
that is too blame - in fact it may not exist - which would explain
why when you write printf("%f",double_number) you end up with "%f"
on the screen since the first function is unaware of the %f option, therefore
treats it as though it is a string.
To sum up - Yeah I think it's a bug and it has been bothering me for some time!akk@trantor.informatik.uni-erlangen.de (Andreas K. Klingler) (09/08/90)
In article <29545@nigel.ee.udel.edu> R_MCINTI%UNHH.BITNET@mitvma.mit.edu writes: >> regarding the atof() problem in lattice "C" > >The atof() seems to work fine; the difficulty is in the >printf() routine. I beleive with many vendors there are >two seperate printf() functions; one for interger math , and >one for double precision. It is perhaps the latter function >that is too blame - in fact it may not exist - which would explain >why when you write printf("%f",double_number) you end up with "%f" >on the screen since the first function is unaware of the %f option, therefore >treats it as though it is a string. > >To sum up - Yeah I think it's a bug and it has been bothering me for some time! Try linking with a math library e.g. lcm.lib. This should solve your 'bug'. -- Andreas Klingler akk@trantor.informatik.uni-erlangen.de A business is no business until you have shown the revenue office it was no business
R_MCINTI%UNHH.BITNET@mitvma.mit.edu (09/11/90)
In article <29545@nigel.ee.udel.edu> R_MCINTI%UNHH.BITNET@mitvma.mit.edu writes: >>> regarding the atof() problem in lattice "C" >> >>The atof() seems to work fine; the difficulty is in the >>printf() routine. I beleive with many vendors there are >>two seperate printf() functions; one for interger math , and >>one for double precision. It is perhaps the latter function >>that is too blame - in fact it may not exist - which would explain >>why when you write printf("%f",double_number) you end up with "%f" >>on the screen since the first function is unaware of the %f option, therefore >>treats it as though it is a string. >> >>To sum up - Yeah I think it's a bug and it has been bothering me for some time ! >Try linking with a math library e.g. lcm.lib. This should solve your 'bug'. -- >Andreas Klingler >akk@trantor.informatik.uni-erlangen.de > A business is no business until you have shown the revenue office > it was no business Please - no more - Oh-little-boys-please-link-with-lcm.lib. The FACTS: - Using Lattice C 5.02 - Including <math.h> or <m68881.h> with appropriate math libraries linked in before lc.lib PROBLEM: atof() works - But how do you print it out? printf() with the %f or %g option does not seem to work.- Bug ? Thanks in advance for any help. - Scott McIntire
new@ee.udel.edu (Darren New) (09/11/90)
In article <30123@nigel.ee.udel.edu> R_MCINTI%UNHH.BITNET@mitvma.mit.edu writes: >PROBLEM: atof() works - But how do you print it out? printf() with the %f or >%g option does not seem to work.- Bug ? I just ran into something similar. When I removed -rr from the LC line, the bugs went away. Before that, all floats were close to zero but not close enough to keep from crashing printf() ?!? Try recompiling and relinking everything without the -rr (if you are using it). My problem sure looked like a bug to me. (P.S., I'm still back at 5.04). -- Darren -- --- Darren New --- Grad Student --- CIS --- Univ. of Delaware --- ----- Network Protocols, Graphics, Programming Languages, Formal Description Techniques (esp. Estelle), Coffee -----
walker@unx.sas.com (Doug Walker) (09/12/90)
In article <29545@nigel.ee.udel.edu> R_MCINTI%UNHH.BITNET@mitvma.mit.edu writes: >> regarding the atof() problem in lattice "C" > >The atof() seems to work fine; the difficulty is in the >printf() routine. I beleive with many vendors there are >two seperate printf() functions; one for interger math , and >one for double precision. It is perhaps the latter function >that is too blame - in fact it may not exist - which would explain >why when you write printf("%f",double_number) you end up with "%f" >on the screen since the first function is unaware of the %f option, therefore >treats it as though it is a string. > You're totally correct; there is a non-floating-point version of printf in lc.lib that ignores %f, %g and the like. This is in order to save space in the final executable. Make sure you're linking with a math library (lcm.lib, for example) BEFORE lc.lib and amiga.lib. If it's not listed BEFORE lc.lib, the printf in lc.lib will get picked up as your printf, and you won't see any substitution for the %f. ***** =*|_o_o|\\=====Doug Walker, Software Distiller====== BBS: (919)460-7430 = *|. o.| || | o |// For all you do, this bug's for you! ====== usenet: ...mcnc!rti!sas!walker plink: dwalker bix: djwalker
d87-khd@sm.luth.se (Karl-Gunnar Hultland) (09/14/90)
In article <30123@nigel.ee.udel.edu> R_MCINTI%UNHH.BITNET@mitvma.mit.edu writes: >Please - no more - Oh-little-boys-please-link-with-lcm.lib. >The FACTS: >- Using Lattice C 5.02 >- Including <math.h> or <m68881.h> with appropriate math libraries linked in > before lc.lib > >PROBLEM: atof() works - But how do you print it out? printf() with the %f or >%g option does not seem to work.- Bug ? > >Thanks in advance for any help. - Scott McIntire My guess is that you are using the _builtin_printf which get defined in stdio.h, examine it and do the proper #undef. The builtin version is smaller but supports only integer and string output. Karl --- Karl Hultland,(d87-khd@sm.luth.se) University of Lulea,Sweden Revolution: in politics, an abrupt change in the form of misgovernment. - A. Bierce
walker@unx.sas.com (Doug Walker) (09/20/90)
In article <30123@nigel.ee.udel.edu> R_MCINTI%UNHH.BITNET@mitvma.mit.edu writes: > >The FACTS: >- Using Lattice C 5.02 >- Including <math.h> or <m68881.h> with appropriate math libraries linked in > before lc.lib > >PROBLEM: atof() works - But how do you print it out? printf() with the %f or >%g option does not seem to work.- Bug ? > >Thanks in advance for any help. - Scott McIntire There is no known bug in the 5.02 libraries with %f or %g. I am still not convinced you are getting the right printf. Make sure you are using lcmr.lib if you are using registerized parameters (-rr). Use the cross-reference and map to determine where your printf comes from. Leave off lc.lib or lcr.lib from your link line and make SURE that printf doesn't come through as undefined. (Actually link with JUST the math library and make sure it does get defined.) Are your math libraries linked in before amiga.lib as well? (They should be.) Compile this: #include <stdio.h> void main(void) {printf("%g\n", 0.0);} with the line 'lc -Lm test' and see if it works correctly. What compile line are you using? What math options? What link line? ***** =*|_o_o|\\=====Doug Walker, Software Distiller====== BBS: (919)460-7430 = *|. o.| || | o |// For all you do, this bug's for you! ====== usenet: ...mcnc!rti!sas!walker plink: dwalker bix: djwalker
walker@unx.sas.com (Doug Walker) (09/20/90)
In article <30126@nigel.ee.udel.edu> new@ee.udel.edu (Darren New) writes: > >I just ran into something similar. When I removed -rr from the LC line, >the bugs went away. Before that, all floats were close to zero but not >close enough to keep from crashing printf() ?!? Try recompiling >and relinking everything without the -rr (if you are using it). >My problem sure looked like a bug to me. (P.S., I'm still back >at 5.04). -- Darren That sounds like you're using the wrong math library. were you linking with lcmr.lib? ***** =*|_o_o|\\=====Doug Walker, Software Distiller====== BBS: (919)460-7430 = *|. o.| || | o |// For all you do, this bug's for you! ====== usenet: ...mcnc!rti!sas!walker plink: dwalker bix: djwalker
new@ee.udel.edu (Darren New) (09/20/90)
In article <1990Sep19.174418.22665@unx.sas.com> walker@unx.sas.com (Doug Walker) writes: > >In article <30126@nigel.ee.udel.edu> new@ee.udel.edu (Darren New) writes: >>I just ran into something similar. When I removed -rr from the LC line, >>the bugs went away. >That sounds like you're using the wrong math library. were you linking >with lcmr.lib? Well, my compile line is: LC -iINCLUDE: -rr -cafkrsu -M {f1} {f2} {f3} {f4} ... I link with Tess.link, which contains: FROM LIB:c.o+Tess.o+TessLo.o+TessHi.o+Cube.o+Files.o+* Keys.o+Util3.o+XForm3.o+Util4.o+XForm4.o+ILBM.o+* WriteIlbm.o+Mesg.o TO Tess LIB lib:lcmr.lib+lib:DBugLib.lib+LIB:lcr.lib+LIB:amiga.lib When I take out -rr and the 'r's from the ends of the library names, it works. (DBugLib is mine, and does not currently get called.) When I put them in, any attempt to use printf to print a float or double causes an infinite number of '0' characters to print, and often GURUs and/or stomps low memory. Looks like a bug to me. Any suggestions? -- Darren -- --- Darren New --- Grad Student --- CIS --- Univ. of Delaware --- ----- Network Protocols, Graphics, Programming Languages, Formal Description Techniques (esp. Estelle), Coffee -----
walker@unx.sas.com (Doug Walker) (09/24/90)
In article <31003@nigel.ee.udel.edu> new@ee.udel.edu (Darren New) writes: > >When I take out -rr and the 'r's from the ends of the library names, it >works. (DBugLib is mine, and does not currently get called.) When I >put them in, any attempt to use printf to print a float or double >causes an infinite number of '0' characters to print, and often GURUs >and/or stomps low memory. Looks like a bug to me. Any suggestions? > -- Darren If this is 5.02, it might be a parameter passign bug that was fixed in 5.04. Call SAS tech support at (919)677-8000 or write to them Amiga C Technical Support SAS Institute, Inc SAS Campus Drive Cary, NC 27513 and they will resolve it for you. (I try to help, but I'm NOT tech support, and supporting the product over the net is against net policy anyway.) ***** =*|_o_o|\\=====Doug Walker, Software Distiller====== BBS: (919)460-7430 = *|. o.| || | o |// For all you do, this bug's for you! ====== usenet: ...mcnc!rti!sas!walker plink: dwalker bix: djwalker