got rid of old code that used to be required for bootstrapping

lib/pure/parseutils.nim

@@ -231,96 +231,11 @@ proc parseInt*(s: string, number: var int, start = 0): int {.
   else:
     number = int(res)
 
-when defined(nimParseBiggestFloatMagic):
-  proc parseBiggestFloat*(s: string, number: var BiggestFloat, start = 0): int {.
-    magic: "ParseBiggestFloat", importc: "nimParseBiggestFloat", noSideEffect.}
-    ## parses a float starting at `start` and stores the value into `number`.
-    ## Result is the number of processed chars or 0 if a parsing error
-    ## occurred.
-else:
-  proc tenToThePowerOf(b: int): BiggestFloat =
-    var b = b
-    var a = 10.0
-    result = 1.0
-    while true:
-      if (b and 1) == 1:
-        result *= a
-      b = b shr 1
-      if b == 0: break
-      a *= a
-
-  proc parseBiggestFloat*(s: string, number: var BiggestFloat, start = 0): int {.
-    rtl, extern: "npuParseBiggestFloat", noSideEffect.} =
-    ## parses a float starting at `start` and stores the value into `number`.
-    ## Result is the number of processed chars or 0 if there occured a parsing
-    ## error.
-    var
-      esign = 1.0
-      sign = 1.0
-      i = start
-      exponent: int
-      flags: int
-    number = 0.0
-    if s[i] == '+': inc(i)
-    elif s[i] == '-':
-      sign = -1.0
-      inc(i)
-    if s[i] == 'N' or s[i] == 'n':
-      if s[i+1] == 'A' or s[i+1] == 'a':
-        if s[i+2] == 'N' or s[i+2] == 'n':
-          if s[i+3] notin IdentChars:
-            number = NaN
-            return i+3 - start
-      return 0
-    if s[i] == 'I' or s[i] == 'i':
-      if s[i+1] == 'N' or s[i+1] == 'n':
-        if s[i+2] == 'F' or s[i+2] == 'f':
-          if s[i+3] notin IdentChars: 
-            number = Inf*sign
-            return i+3 - start
-      return 0
-    while s[i] in {'0'..'9'}:
-      # Read integer part
-      flags = flags or 1
-      number = number * 10.0 + toFloat(ord(s[i]) - ord('0'))
-      inc(i)
-      while s[i] == '_': inc(i)
-    # Decimal?
-    if s[i] == '.':
-      var hd = 1.0
-      inc(i)
-      while s[i] in {'0'..'9'}:
-        # Read fractional part
-        flags = flags or 2
-        number = number * 10.0 + toFloat(ord(s[i]) - ord('0'))
-        hd = hd * 10.0
-        inc(i)
-        while s[i] == '_': inc(i)
-      number = number / hd # this complicated way preserves precision
-    # Again, read integer and fractional part
-    if flags == 0: return 0
-    # Exponent?
-    if s[i] in {'e', 'E'}:
-      inc(i)
-      if s[i] == '+':
-        inc(i)
-      elif s[i] == '-':
-        esign = -1.0
-        inc(i)
-      if s[i] notin {'0'..'9'}:
-        return 0
-      while s[i] in {'0'..'9'}:
-        exponent = exponent * 10 + ord(s[i]) - ord('0')
-        inc(i)
-        while s[i] == '_': inc(i)
-    # Calculate Exponent
-    let hd = tenToThePowerOf(exponent)
-    if esign > 0.0: number = number * hd
-    else:           number = number / hd
-    # evaluate sign
-    number = number * sign
-    result = i - start
-
+proc parseBiggestFloat*(s: string, number: var BiggestFloat, start = 0): int {.
+  magic: "ParseBiggestFloat", importc: "nimParseBiggestFloat", noSideEffect.}
+  ## parses a float starting at `start` and stores the value into `number`.
+  ## Result is the number of processed chars or 0 if a parsing error
+  ## occurred.
 
 proc parseFloat*(s: string, number: var float, start = 0): int {.
   rtl, extern: "npuParseFloat", noSideEffect.} =