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convert ASCII TABs to ASCII SPACEs
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This commit is contained in:
Landon Curt Noll
96
help/intro
96
help/intro
@@ -2,36 +2,36 @@ What is calc?
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Calc is an interactive calculator which provides for easy large
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numeric calculations, but which also can be easily programmed
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for difficult or long calculations. It can accept a command line
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for difficult or long calculations. It can accept a command line
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argument, in which case it executes that single command and exits.
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Otherwise, it enters interactive mode. In this mode, it accepts
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commands one at a time, processes them, and displays the answers.
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In the simplest case, commands are simply expressions which are
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evaluated. For example, the following line can be input:
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evaluated. For example, the following line can be input:
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3 * (4 + 1)
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3 * (4 + 1)
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and the calculator will print:
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15
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15
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Calc has the usual collection of arithmetic operators +, -, /, *
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as well as ^ (exponentiation), % (modulus) and // (integer divide).
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For example:
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3 * 19^43 - 1
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3 * 19^43 - 1
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will produce:
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29075426613099201338473141505176993450849249622191102976
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29075426613099201338473141505176993450849249622191102976
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Notice that calc values can be very large. For example:
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2^23209-1
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2^23209-1
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will print:
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402874115778988778181873329071 ... many digits ... 3779264511
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402874115778988778181873329071 ... many digits ... 3779264511
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The special '.' symbol (called dot), represents the result of the
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last command expression, if any. This is of great use when a series
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@@ -39,62 +39,62 @@ What is calc?
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and the last result needs to be redisplayed. For example, the above
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result (2^23209-1) can be modified by typing:
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. % (2^127-1)
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. % (2^127-1)
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and the calculator will print:
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39614081257132168796771975167
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39614081257132168796771975167
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For more complex calculations, variables can be used to save the
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intermediate results. For example, the result of adding 7 to the
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previous result can be saved by typing:
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curds = 15
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whey = 7 + 2*curds
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curds = 15
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whey = 7 + 2*curds
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Functions can be used in expressions. There are a great number of
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pre-defined functions. For example, the following will calculate
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the factorial of the value of 'whey':
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fact(whey)
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fact(whey)
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and the calculator prints:
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13763753091226345046315979581580902400000000
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13763753091226345046315979581580902400000000
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The calculator also knows about complex numbers, so that typing:
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(2+3i) * (4-3i)
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cos(.)
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(2+3i) * (4-3i)
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cos(.)
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will print:
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17+6i
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-55.50474777265624667147+193.9265235748927986537i
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17+6i
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-55.50474777265624667147+193.9265235748927986537i
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The calculator can calculate transcendental functions, and accept and
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display numbers in real or exponential format. For example, typing:
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config("display", 70)
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epsilon(1e-70)
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sin(1)
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config("display", 70)
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epsilon(1e-70)
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sin(1)
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prints:
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0.8414709848078965066525023216302989996225630607983710656727517099919104
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0.8414709848078965066525023216302989996225630607983710656727517099919104
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Calc can output values in terms of fractions, octal or hexadecimal.
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For example:
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config("mode", "fraction"),
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(17/19)^23
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base(16),
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(19/17)^29
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config("mode", "fraction"),
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(17/19)^23
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base(16),
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(19/17)^29
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will print:
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19967568900859523802559065713/257829627945307727248226067259
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0x9201e65bdbb801eaf403f657efcf863/0x5cd2e2a01291ffd73bee6aa7dcf7d1
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19967568900859523802559065713/257829627945307727248226067259
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0x9201e65bdbb801eaf403f657efcf863/0x5cd2e2a01291ffd73bee6aa7dcf7d1
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All numbers are represented as fractions with arbitrarily large
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numerators and denominators which are always reduced to lowest terms.
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@@ -116,43 +116,43 @@ What is calc?
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Many useful built-in mathematical functions are available. Use
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the:
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help builtin
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help builtin
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command to list them.
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You can also define your own functions by using the 'define' keyword,
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followed by a function declaration very similar to C.
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define f2(n)
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{
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local ans;
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define f2(n)
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{
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local ans;
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ans = 1;
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while (n > 1)
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ans *= (n -= 2);
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return ans;
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}
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ans = 1;
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while (n > 1)
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ans *= (n -= 2);
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return ans;
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}
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Thus the input:
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f2(79)
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f2(79)
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will produce:
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1009847364737869270905302433221592504062302663202724609375
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1009847364737869270905302433221592504062302663202724609375
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Functions which only need to return a simple expression can be defined
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using an equals sign, as in the example:
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define sc(a,b) = a^3 + b^3
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define sc(a,b) = a^3 + b^3
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Thus the input:
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sc(31, 61)
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sc(31, 61)
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will produce:
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256772
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256772
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Variables in functions can be defined as either 'global', 'local',
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or 'static'. Global variables are common to all functions and the
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@@ -164,7 +164,7 @@ What is calc?
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For more information about the calc language and features, try:
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help overview
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help overview
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In particular, check out the other help functions listed in the
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overview help file.
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@@ -177,7 +177,7 @@ What is calc?
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##
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## Calc is distributed in the hope that it will be useful, but WITHOUT
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## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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## Public License for more details.
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##
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## A copy of version 2.1 of the GNU Lesser General Public License is
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@@ -185,8 +185,8 @@ What is calc?
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## received a copy with calc; if not, write to Free Software Foundation, Inc.
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## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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##
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## Under source code control: 1991/07/21 04:37:21
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## File existed as early as: 1991
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## Under source code control: 1991/07/21 04:37:21
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## File existed as early as: 1991
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##
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## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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