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[/] [forwardcom/] [libraries/] [divide_int.as] - Blame information for rev 133

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1 73 Agner
/****************************  divide_int.as ********************************
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* Author:        Agner Fog
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* date created:  2021-05-26
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* Last modified: 2021-08-03
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* Version:       1.11
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* Project:       ForwardCom library libc.li
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* Description:   divide_int: divide two 32-bit signed integers
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* This function is for compatability with libc_light.li.
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* It returns the quotient and the remainder of r0 / r1
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*
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* Copyright 2021 GNU General Public License http://www.gnu.org/licenses
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*****************************************************************************/
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code section execute
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_divide_int function public reguse=3,0
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  // divide two 32 bit signed integers. return quotient and remainder
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  // input r0: dividend
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  // input r1: divisor
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  // output r0: r0 / r1
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  // output r1: r0 % r1
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  if (int32 r1 != 0) {
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      int32  r2 = r0 / r1
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      int32  r1 = r0 % r1
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      int32  r0 = r2
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      return
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  }
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  // return INT_MIN if error
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  int32 r0 = 0x80000000
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  int32 r1 = 0
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  return
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code end

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