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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [stdlib/] [__exp10.c] - Rev 307
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/* * compute 10**x by successive squaring. */ #include <_ansi.h> #include "std.h" double _DEFUN (__exp10, (x), unsigned x) { static _CONST double powtab[] = {1.0, 10.0, 100.0, 1000.0, 10000.0}; if (x < (sizeof (powtab) / sizeof (double))) return powtab[x]; else if (x & 1) { return 10.0 * __exp10 (x - 1); } else { double n = __exp10 (x / 2); return n * n; } }
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