| author | blanchet |
| Mon, 01 Sep 2014 18:42:02 +0200 | |
| changeset 58130 | 5e9170812356 |
| parent 56798 | 939e88e79724 |
| child 63167 | 0909deb8059b |
| permissions | -rw-r--r-- |
| 45610 | 1 |
(* Title: HOL/SPARK/Manual/Simple_Greatest_Common_Divisor.thy |
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Author: Stefan Berghofer |
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Copyright: secunet Security Networks AG |
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*) |
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theory Simple_Greatest_Common_Divisor |
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imports "../SPARK" GCD |
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begin |
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spark_proof_functions |
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gcd = "gcd :: int \<Rightarrow> int \<Rightarrow> int" |
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56798
939e88e79724
Discontinued old spark_open; spark_open_siv is now spark_open
berghofe
parents:
45610
diff
changeset
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spark_open "simple_greatest_common_divisor/g_c_d" |
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spark_vc procedure_g_c_d_4 |
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using `0 < d` `gcd c d = gcd m n` |
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by (simp add: gcd_non_0_int) |
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spark_vc procedure_g_c_d_9 |
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using `0 \<le> c` `gcd c 0 = gcd m n` |
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by simp |
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spark_end |
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end |