1 /* @(#)s_pow10.c 5.1 93/09/24 */ 2 /* Modification from s_exp10.c Yaakov Selkowitz 2007. */ 3 4 /* 5 * ==================================================== 6 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 7 * 8 * Developed at SunPro, a Sun Microsystems, Inc. business. 9 * Permission to use, copy, modify, and distribute this 10 * software is freely granted, provided that this notice 11 * is preserved. 12 * ==================================================== 13 */ 14 15 /* 16 FUNCTION 17 <<pow10>>, <<pow10f>>---base 10 power functions 18 INDEX 19 pow10 20 INDEX 21 pow10f 22 23 ANSI_SYNOPSIS 24 #include <math.h> 25 double pow10(double <[x]>); 26 float pow10f(float <[x]>); 27 28 TRAD_SYNOPSIS 29 #include <math.h> 30 double pow10(<[x]>); 31 double <[x]>; 32 33 float pow10f(<[x]>); 34 float <[x]>; 35 36 DESCRIPTION 37 <<pow10>> and <<pow10f>> calculate 10 ^ <[x]>, that is, 38 @ifnottex 39 10 raised to the power <[x]>. 40 @end ifnottex 41 @tex 42 $10^x$ 43 @end tex 44 45 You can use the (non-ANSI) function <<matherr>> to specify 46 error handling for these functions. 47 48 RETURNS 49 On success, <<pow10>> and <<pow10f>> return the calculated value. 50 If the result underflows, the returned value is <<0>>. If the 51 result overflows, the returned value is <<HUGE_VAL>>. In 52 either case, <<errno>> is set to <<ERANGE>>. 53 54 PORTABILITY 55 <<pow10>> and <<pow10f>> are GNU extensions. 56 */ 57 58 /* 59 * wrapper pow10(x) 60 */ 61 62 #undef pow10 63 #include "fdlibm.h" 64 #include <errno.h> 65 #include <math.h> 66 67 #ifndef _DOUBLE_IS_32BITS 68 69 #ifdef __STDC__ pow10(double x)70 double pow10(double x) /* wrapper pow10 */ 71 #else 72 double pow10(x) /* wrapper pow10 */ 73 double x; 74 #endif 75 { 76 return pow(10.0, x); 77 } 78 79 #endif /* defined(_DOUBLE_IS_32BITS) */ 80