From 8e23335c0fe0ecccc807dd0dd9b5c9d877dc7d43 Mon Sep 17 00:00:00 2001 From: Johny Mattsson Date: Thu, 22 Sep 2016 11:42:25 +1000 Subject: [PATCH] Removed more unused legacy code. --- components/base_nodemcu/c_stdlib.c | 239 --------------------- components/base_nodemcu/include/c_stdlib.h | 1 - 2 files changed, 240 deletions(-) diff --git a/components/base_nodemcu/c_stdlib.c b/components/base_nodemcu/c_stdlib.c index 2696827b..5bc5729d 100644 --- a/components/base_nodemcu/c_stdlib.c +++ b/components/base_nodemcu/c_stdlib.c @@ -24,242 +24,3 @@ const char *c_getenv(const char *__string) } #endif - -const double powersOf10[] = /* Table giving binary powers of 10. Entry */ -{ - 10., /* is 10^2^i. Used to convert decimal */ - 100., /* exponents into floating-point numbers. */ - 1.0e4, - 1.0e8, - 1.0e16, - 1.0e32, - 1.0e64, - 1.0e128, - 1.0e256 -}; - -double c_strtod(const char *string, char **endPtr) -{ - int maxExponent = 511; /* Largest possible base 10 exponent. Any - * exponent larger than this will already - * produce underflow or overflow, so there's - * no need to worry about additional digits. - */ - - int sign, expSign = false; - double fraction, dblExp; - const double *d; - register const char *p; - register int c; - int exp = 0; /* Exponent read from "EX" field. */ - int fracExp = 0; /* Exponent that derives from the fractional - * part. Under normal circumstatnces, it is - * the negative of the number of digits in F. - * However, if I is very long, the last digits - * of I get dropped (otherwise a long I with a - * large negative exponent could cause an - * unnecessary overflow on I alone). In this - * case, fracExp is incremented one for each - * dropped digit. */ - int mantSize; /* Number of digits in mantissa. */ - int decPt; /* Number of mantissa digits BEFORE decimal - * point. */ - const char *pExp; /* Temporarily holds location of exponent - * in string. */ - - /* - * Strip off leading blanks and check for a sign. - */ - - p = string; - while (isspace((unsigned char)(*p))) - { - p += 1; - } - if (*p == '-') - { - sign = true; - p += 1; - } - else - { - if (*p == '+') - { - p += 1; - } - sign = false; - } - - /* - * Count the number of digits in the mantissa (including the decimal - * point), and also locate the decimal point. - */ - - decPt = -1; - for (mantSize = 0; ; mantSize += 1) - { - c = *p; - if (!isdigit(c)) - { - if ((c != '.') || (decPt >= 0)) - { - break; - } - decPt = mantSize; - } - p += 1; - } - - /* - * Now suck up the digits in the mantissa. Use two integers to - * collect 9 digits each (this is faster than using floating-point). - * If the mantissa has more than 18 digits, ignore the extras, since - * they can't affect the value anyway. - */ - - pExp = p; - p -= mantSize; - if (decPt < 0) - { - decPt = mantSize; - } - else - { - mantSize -= 1; /* One of the digits was the point. */ - } - if (mantSize > 18) - { - fracExp = decPt - 18; - mantSize = 18; - } - else - { - fracExp = decPt - mantSize; - } - if (mantSize == 0) - { - fraction = 0.0; - p = string; - goto done; - } - else - { - int frac1, frac2; - frac1 = 0; - for ( ; mantSize > 9; mantSize -= 1) - { - c = *p; - p += 1; - if (c == '.') - { - c = *p; - p += 1; - } - frac1 = 10 * frac1 + (c - '0'); - } - frac2 = 0; - for (; mantSize > 0; mantSize -= 1) - { - c = *p; - p += 1; - if (c == '.') - { - c = *p; - p += 1; - } - frac2 = 10 * frac2 + (c - '0'); - } - fraction = (1.0e9 * frac1) + frac2; - } - - /* - * Skim off the exponent. - */ - - p = pExp; - if ((*p == 'E') || (*p == 'e')) - { - p += 1; - if (*p == '-') - { - expSign = true; - p += 1; - } - else - { - if (*p == '+') - { - p += 1; - } - expSign = false; - } - if (!isdigit((unsigned char)(*p))) - { - p = pExp; - goto done; - } - while (isdigit((unsigned char)(*p))) - { - exp = exp * 10 + (*p - '0'); - p += 1; - } - } - if (expSign) - { - exp = fracExp - exp; - } - else - { - exp = fracExp + exp; - } - - /* - * Generate a floating-point number that represents the exponent. - * Do this by processing the exponent one bit at a time to combine - * many powers of 2 of 10. Then combine the exponent with the - * fraction. - */ - - if (exp < 0) - { - expSign = true; - exp = -exp; - } - else - { - expSign = false; - } - if (exp > maxExponent) - { - exp = maxExponent; - // errno = ERANGE; - } - dblExp = 1.0; - for (d = powersOf10; exp != 0; exp >>= 1, d += 1) - { - if (exp & 01) - { - dblExp *= *d; - } - } - if (expSign) - { - fraction /= dblExp; - } - else - { - fraction *= dblExp; - } - -done: - if (endPtr != NULL) - { - *endPtr = (char *) p; - } - - if (sign) - { - return -fraction; - } - return fraction; -} diff --git a/components/base_nodemcu/include/c_stdlib.h b/components/base_nodemcu/include/c_stdlib.h index 8377193d..24cbcd3d 100644 --- a/components/base_nodemcu/include/c_stdlib.h +++ b/components/base_nodemcu/include/c_stdlib.h @@ -2,6 +2,5 @@ #define _SDK_OVERRIDES_STDLIB_H_ extern const char *c_getenv (const char *); -extern double c_strtod(const char *string, char **endPtr); #endif