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| 2 | /* @(#)s_atan.c 5.1 93/09/24 */
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| 3 | /*
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| 4 | * ====================================================
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| 5 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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| 6 | *
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| 7 | * Developed at SunPro, a Sun Microsystems, Inc. business.
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| 8 | * Permission to use, copy, modify, and distribute this
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| 9 | * software is freely granted, provided that this notice
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| 10 | * is preserved.
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| 11 | * ====================================================
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| 12 | *
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| 13 | */
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| 14 |
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| 15 | /*
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| 16 | FUNCTION
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| 17 | <<atan>>, <<atanf>>---arc tangent
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| 18 |
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| 19 | INDEX
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| 20 | atan
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| 21 | INDEX
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| 22 | atanf
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| 23 |
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| 24 | ANSI_SYNOPSIS
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| 25 | #include <math.h>
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| 26 | double atan(double <[x]>);
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| 27 | float atanf(float <[x]>);
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| 28 |
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| 29 | TRAD_SYNOPSIS
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| 30 | #include <math.h>
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| 31 | double atan(<[x]>);
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| 32 | double <[x]>;
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| 33 |
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| 34 | float atanf(<[x]>);
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| 35 | float <[x]>;
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| 36 |
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| 37 | DESCRIPTION
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| 38 |
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| 39 | <<atan>> computes the inverse tangent (arc tangent) of the input value.
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