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43 lines
1.0 KiB
Plaintext
43 lines
1.0 KiB
Plaintext
NAME
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frac - return the fractional part of a number or of numbers in a value
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SYNOPSIS
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frac(x)
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TYPES
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If x is an object of type xx, frac(x) requires xx_frac to have been
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defined; other conditions on x and the value returned depend on
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the definition of xx_frac.
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For other x:
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x number (real or complex), matrix
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return number or matrix
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DESCRIPTION
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If x is an integer, frac(x) returns zero. For other real values of x,
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frac(x) returns the real number f for which x = i + f, where i is an
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integer, sgn(f) = sgn(x), and abs(f) < 1.
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If x is complex, frac(x) returns frac(re(x)) + frac(im(x))*1i.
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If x is a matrix, frac(x) returns the matrix m with the same structure
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as x in which m[[i]] = frac(x[[i]]).
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EXAMPLE
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> c = config("mode", "frac")
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> print frac(3), frac(22/7), frac(27/7), frac(-3.125), frac(2.15 - 3.25i)
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0 1/7 6/7 -1/8 3/20-1i/4
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LIMITS
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none
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LIBRARY
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NUMBER *qfrac(NUMBER *x)
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COMPLEX *cfrac(COMPLEX *x)
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MATRIX *matfrac(MATRIX *x)
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SEE ALSO
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int, ceil, floor
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