1 | /* @(#)s_pow10.c 5.1 93/09/24 */ |
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2 | /* Modification from s_exp10.c Yaakov Selkowitz 2007. */ |
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3 | |
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4 | /* |
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5 | * ==================================================== |
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6 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
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7 | * |
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8 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
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9 | * Permission to use, copy, modify, and distribute this |
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10 | * software is freely granted, provided that this notice |
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11 | * is preserved. |
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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 | <<pow10>>, <<pow10f>>---base 10 power functions |
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18 | INDEX |
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19 | pow10 |
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20 | INDEX |
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21 | pow10f |
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22 | |
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23 | SYNOPSIS |
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24 | #include <math.h> |
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25 | double pow10(double <[x]>); |
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26 | float pow10f(float <[x]>); |
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27 | |
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28 | DESCRIPTION |
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29 | <<pow10>> and <<pow10f>> calculate 10 ^ <[x]>, that is, |
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30 | @ifnottex |
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31 | 10 raised to the power <[x]>. |
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32 | @end ifnottex |
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33 | @tex |
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34 | $10^x$ |
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35 | @end tex |
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36 | |
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37 | You can use the (non-ANSI) function <<matherr>> to specify |
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38 | error handling for these functions. |
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39 | |
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40 | RETURNS |
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41 | On success, <<pow10>> and <<pow10f>> return the calculated value. |
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42 | If the result underflows, the returned value is <<0>>. If the |
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43 | result overflows, the returned value is <<HUGE_VAL>>. In |
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44 | either case, <<errno>> is set to <<ERANGE>>. |
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45 | |
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46 | PORTABILITY |
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47 | <<pow10>> and <<pow10f>> are GNU extensions. |
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48 | */ |
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49 | |
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50 | /* |
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51 | * wrapper pow10(x) |
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52 | */ |
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53 | |
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54 | #undef pow10 |
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55 | #include "fdlibm.h" |
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56 | #include <errno.h> |
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57 | #include <math.h> |
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58 | |
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59 | #ifndef _DOUBLE_IS_32BITS |
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60 | |
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61 | #ifdef __STDC__ |
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62 | double pow10(double x) /* wrapper pow10 */ |
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63 | #else |
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64 | double pow10(x) /* wrapper pow10 */ |
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65 | double x; |
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66 | #endif |
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67 | { |
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68 | return pow(10.0, x); |
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69 | } |
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70 | |
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71 | #endif /* defined(_DOUBLE_IS_32BITS) */ |
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