[psaux] Use FT_SqrtFixed
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* src/psaux/cffdecode.c <cff_op_sqrt>: Call `FT_SqrtFixed`. * src/psaux/psintrp.c <cf2_escSQRT>: Ditto.
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@ -1753,22 +1753,9 @@
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/* without upper limit the loop below might not finish */
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if ( args[0] > 0x7FFFFFFFL )
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args[0] = 0xB504F3L; /* sqrt( 32768.0 ) */
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args[0] = 0xB504F4L; /* sqrt( 32768.0044 ) */
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else if ( args[0] > 0 )
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{
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FT_Fixed root = 1 << ( ( 17 + FT_MSB( args[0] ) ) >> 1 );
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FT_Fixed new_root;
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for (;;)
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{
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new_root = ( root + FT_DivFix( args[0], root ) + 1 ) >> 1;
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if ( new_root == root )
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break;
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root = new_root;
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}
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args[0] = new_root;
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}
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args[0] = (FT_Fixed)FT_SqrtFixed( args[0] );
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else
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args[0] = 0;
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args++;
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@ -2276,22 +2276,7 @@
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arg = cf2_stack_popFixed( opStack );
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if ( arg > 0 )
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{
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/* initial guess based on the most significant bit */
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FT_Fixed root = 1 << ( ( 17 + FT_MSB( arg ) ) >> 1 );
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FT_Fixed new_root;
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/* Babylonian method */
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for (;;)
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{
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new_root = ( root + FT_DivFix( arg, root ) + 1 ) >> 1;
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if ( new_root == root )
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break;
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root = new_root;
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}
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arg = new_root;
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}
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arg = (CF2_F16Dot16)FT_SqrtFixed( arg );
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else
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arg = 0;
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