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76
help/quo
76
help/quo
@@ -15,17 +15,17 @@ TYPES
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If neither x nor y is an object, and x is not a matrix or list:
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x number (real or complex)
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y real
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rnd integer, defaults to config("quo")
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x number (real or complex)
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y real
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rnd integer, defaults to config("quo")
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return number
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return number
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DESCRIPTION
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If x is real or complex and y is zero, quo(x, y, rnd) returns zero.
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If x is complex, quo(x, y, rnd) returns
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quo(re(x), y, rnd) + quo(im(x), y, rnd) * 1i.
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quo(re(x), y, rnd) + quo(im(x), y, rnd) * 1i.
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In the following it is assumed that x is real and y is nonzero.
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@@ -35,40 +35,40 @@ DESCRIPTION
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one of the two integers v for which abs(x/y - v) < 1. Which
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integer is returned is controlled by rnd as follows:
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rnd sign of x/y - v Description of rounding
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rnd sign of x/y - v Description of rounding
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0 + down, towards minus infinity
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1 - up, towards infinity
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2 sgn(x/y) towards zero
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3 -sgn(x/y) from zero
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4 sgn(y)
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5 -sgn(y)
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6 sgn(x)
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7 -sgn(x)
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8 to nearest even integer
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9 to nearest odd integer
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10 even if x/y > 0, otherwise odd
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11 odd if x/y > 0, otherwise even
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12 even if y > 0, otherwise odd
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13 odd if y > 0, otherwise even
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14 even if x > 0, otherwise odd
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15 odd if x > 0, otherwise even
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0 + down, towards minus infinity
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1 - up, towards infinity
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2 sgn(x/y) towards zero
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3 -sgn(x/y) from zero
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4 sgn(y)
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5 -sgn(y)
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6 sgn(x)
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7 -sgn(x)
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8 to nearest even integer
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9 to nearest odd integer
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10 even if x/y > 0, otherwise odd
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11 odd if x/y > 0, otherwise even
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12 even if y > 0, otherwise odd
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13 odd if y > 0, otherwise even
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14 even if x > 0, otherwise odd
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15 odd if x > 0, otherwise even
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16-31 to nearest integer when this
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is uniquely determined;
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otherwise, when x/y is a
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half-integer, as if
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rnd replaced by rnd & 15
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16-31 to nearest integer when this
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is uniquely determined;
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otherwise, when x/y is a
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half-integer, as if
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rnd replaced by rnd & 15
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NOTE: Blank entries in the table above indicate that the
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description would be complicated and probably not of
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much interest.
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NOTE: Blank entries in the table above indicate that the
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description would be complicated and probably not of
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much interest.
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The C language method of modulus and integer division is:
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config("quomod", 2)
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config("quo", 2)
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config("mod", 2)
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config("quomod", 2)
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config("quo", 2)
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config("mod", 2)
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EXAMPLE
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print quo(11,5,0), quo(11,5,1), quo(-11,5,2), quo(-11,-5,3)
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@@ -95,7 +95,7 @@ SEE ALSO
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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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@@ -103,8 +103,8 @@ SEE ALSO
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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: 1995/09/18 04:01:44
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## File existed as early as: 1995
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## Under source code control: 1995/09/18 04:01:44
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## File existed as early as: 1995
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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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