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56 lines
1.2 KiB
Plaintext
56 lines
1.2 KiB
Plaintext
NAME
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fprintf - formatted print to a file
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SYNOPSIS
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fprintf(fd, fmt, x_1, x_2, ...)
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TYPES
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fd file
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fmt string
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x_1, x_2, ... any
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return null
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DESCRIPTION
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This prints to the file fd exactly what would be printed to
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the standard output by printf(fmt, x_1, x_2, ...).
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EXAMPLE
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> fprintf(files(1), "h=%d, i=%d\n", 2, 3);
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h=2, i=3
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> c = config("epsilon", 1e-6); c = config("display", 6);
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> c = config("tilde", 1); c = config("outround", 0);
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> c = config("fullzero", 0);
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> fmt = "%f,%10f,%-10f,%10.4f,%.4f,%.f.\n";
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> a = sqrt(3);
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> fprintf(files(2), fmt,a,a,a,a,a,a);
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1.732051, 1.732051,1.732051 , ~1.7320,~1.7320,~1.
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> file = fopen("/tmp/foo", "w");
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> mat A[4] = {sqrt(2), 3/7, "undefined", null()};
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> fprintf(file, "%f%r",A,A);
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> fclose(file);
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> !cat /tmp/foo
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mat [4] (4 elements, 4 nonzero):
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[0] = 1.4142135623730950488
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[1] = ~.42857142857142857142
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[2] = "undefined"
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[3] = NULL
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mat [4] (4 elements, 4 nonzero):
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[0] = 1767766952966368811/1250000000000000000
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[1] = 3/7
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[2] = "undefined"
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[3] = NULL
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LIMITS
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The number of arguments of fprintf() is not to exceed 100.
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LIBRARY
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none
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SEE ALSO
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printf, strprintf, print
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