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N^N — compute exponential
&e — base of natural logarithms
&phi — golden ratio
&pi — pi
&random : i — random seed
+N — compute positive
-N — compute negative
abs — compute absolute value
acos — compute arc cosine
asin — compute arc sine
atan — compute arc tangent
cos — compute cosine
dtor — convert degrees to radians
exp — compute exponential
i to i by i — generate integers in sequence
iand — compute bitwise AND
icom — compute bitwise complement
integer — convert to integer
ior — compute bitwise inclusive OR
ishift — arithmetic shift bits
ixor — compute bitwise exclusive OR
log — compute logarithm
N%N — compute remainder
N+N — compute sum
N/N — compute quotient
N1∗N2 — compute product
N<=N — numerically less than or equal
N<N — numerically less than
N=N — numerically equal
N>=N — numerically greater than or equal
N>N — numerically greater than
numeric — convert to numeric
N~=N — numerically not equal
N–N — compute difference
real — convert to real
rtod — convert radians to degrees
seq — generate sequence of integers
sin — compute sine
sqrt — compute square root
tan — compute tangent

Index of Function Types:
affects &pos
character sets
co-expressions
control structures
file processing
generators
infix operations
keywords
lists, sets and tables
math
metadata
output formatting
pattern matching
prefix operations
records
strings
windows and keyboards

Index of Subsystems:
base
digitcnt.icn
SNOBOL4 functions
reads
 
read string
 
Description

s reads(f, i)
reads(f, i) produces a string consisting of the next i characters from f, or the remaining characters of f if fewer remain, but fails on an end of file. In reads(), unlike read(), line termination sequences have no special significance. reads() should be used for reading binary data.
 
Parameters
f
open file object
i
number of characters to read
returns
data read as string or fail
 
Defaults
f
&input
i
1
 
Errors
101 i is not an integer
105 f is not a file
205 i0
212 f is not open for reading
 
See Also
  • read — read line