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95 lines
2.7 KiB
Plaintext
95 lines
2.7 KiB
Plaintext
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#include "hbmath.ch"
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PROCEDURE Main()
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LOCAL nOldMathErrMode
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LOCAL bOldMathErr
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CLS
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? "Testing math function: Exp(), Log() and Sqrt():"
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?
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? " I) Test with correct arguments:"
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? " Exp(0.0) == 1.00 ? ", Exp( 0.0 )
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? " Exp(1.0) == 2.71(8)... ? ", Exp( 1.0 )
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? " Exp(-1.0) == 0.36(7)... ? ", Exp( -1.0 )
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?
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? " Log(1.0) == 0.00 ? ", Log( 1.0 )
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? " Log(2.7) == 0.99(3)... ? ", Log( 2.7 )
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? " Log(0.36) == -1.02(1)... ? ", Log( 0.36 )
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?
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? " Sqrt(1.0) == 1.00 ? ", Sqrt( 1.0 )
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? " Sqrt(4.0) == 2.00 ? ", Sqrt( 4.0 )
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? " Sqrt(2.0) == 1.41(4).. ? ", Sqrt( 2.0 )
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?
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? " II) Test with numeric but incorrect arguments:"
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?
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? " IIa) default error handling(by the functions themselves)"
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? " Exp(-1000) == 0.00 ?", Exp( -1000 )
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? " Exp(1000) == ****... ?", Exp( 1000 )
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?
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? " Log(0) == ****... ?", Log( 0 )
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? " Log(-10) == *****... ?", Log( -10 )
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?
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? " Sqrt(-4) == 0.00 ?", Sqrt( -4 )
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?
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nOldMathErrMode := hb_matherMode( HB_MATH_ERRMODE_USERDEFAULT )
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? " IIb) error handling by error(hb_matherMode() == HB_MATH_ERRMODE_USERDEFAULT)"
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? " Exp(-1000) == 0.00 ?", Exp( -1000 )
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? " Exp(1000) == ****... ?", Exp( 1000 )
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?
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? " Log(0) == ****... ?", Log( 0 )
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? " Log(-10) == *****... ?", Log( -10 )
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?
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? " Sqrt(-4) == 0.00 ?", Sqrt( -4 )
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?
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hb_matherMode( nOldMathErrMode )
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bOldMathErr := hb_matherBlock( {| nType, cFuncname, cError, nArg1, nArg2, aInfo | ;
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localmatherr( nType, cFuncname, cError, nArg1, nArg2, aInfo ) } )
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? " IIc) error handling by callback block(hb_matherBlock())"
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? " Exp(-1000) == ?", Exp( -1000 )
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? " Exp(1000) == ?", Exp( 1000 )
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?
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? " Log(0) == ?", Log( 0 )
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? " Log(-10) == ?", Log( -10 )
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?
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? " Sqrt(-4) == ?", Sqrt( -4 )
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hb_matherBlock( bOldMathErr )
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RETURN
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FUNCTION localmatherr( nType, cFuncname, cError, nArg1, nArg2, aInfo )
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LOCAL cStr := "!! Local handling of math error MATH/"
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cStr += hb_ntos( nType ) + " in " + cFuncname + "("
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IF HB_ISNUMERIC( nArg1 )
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cStr += hb_ntos( nArg1 )
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ENDIF
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IF HB_ISNUMERIC( nArg2 )
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cStr += "," + hb_ntos( nArg2 )
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ENDIF
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cStr += "):"
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? cStr
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? "!! " + cError
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IF aInfo[ HB_MATHERRORBLOCK_HANDLED ]
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? "!! --> already handled with return value: " + ;
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hb_ntos( aInfo[ HB_MATHERRORBLOCK_RETVAL ] )
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RETURN 1
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ENDIF
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? "!! setting return value to --> 5.0"
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aInfo[ HB_MATHERRORBLOCK_RETVAL ] := 5.0
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aInfo[ HB_MATHERRORBLOCK_HANDLED ] := .T.
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RETURN 1
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