Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - FpX.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30556-bb9f5f8fc8) Lines: 1976 2156 91.7 % Date: 2025-11-25 09:20:50 Functions: 213 228 93.4 % Legend: Lines: hit not hit

Function Name	Hit count
Fp2_norm	18961
Fp2_sqrt	19392
FpVV_polint_tree	15
FpV_FpM_polint	0
FpV_inv	33272
FpV_invVandermonde	30830
FpV_polint	22
FpV_producttree	30845
FpV_roots_to_pol	93292
FpXC_FpXQV_eval	1470
FpXC_FpXQ_eval	588
FpXM_FpXQV_eval	315
FpXM_FpX_mul2	36106
FpXM_mul2	17253
FpXQM_autsum	147
FpXQM_autsum_mul	315
FpXQM_autsum_sqr	217
FpXQ_autpow	4444
FpXQ_autpow_msqr	42
FpXQ_autpow_sqr	4538
FpXQ_autpowers	1687
FpXQ_autsum	2775
FpXQ_autsum_mul	3061
FpXQ_autsum_sqr	2901
FpXQ_auttrace	430
FpXQ_auttrace_mul	360
FpXQ_auttrace_sqr	317
FpXQ_charpoly	15
FpXQ_conjvec	8
FpXQ_div	533285
FpXQ_inv	1097725
FpXQ_invsafe	1097723
FpXQ_issquare	401223
FpXQ_log	706485
FpXQ_matrix_pow	66289
FpXQ_minpoly	13862
FpXQ_mul	11135279
FpXQ_norm	363819
FpXQ_order	1814
FpXQ_pow	1033453
FpXQ_pow_Frobenius	297279
FpXQ_powers	389581
FpXQ_powu	608028
FpXQ_red	17729503
FpXQ_sqr	6491155
FpXQ_sqrt	78589
FpXQ_sqrtl_spec	543
FpXQ_sqrtn	1264
FpXQ_sqrtn_spec	900
FpXQ_sumautsum	1266
FpXQ_sumautsum_msqr	1123
FpXQ_sumautsum_sqr	2264
FpXQ_trace	21067
FpXQ_transmul	7156
FpXQ_transmul_init	1652
FpXT_red	1661631
FpXT_sqr	7602
FpXV_FpX_fromdigits	4564
FpXV_chinese	588
FpXV_chinese_tree	588
FpXV_chinesetree	588
FpXV_factorback	23404
FpXV_invdivexact	588
FpXV_prod	311349
FpXV_producttree	588
FpXV_producttree_dbl	31433
FpXV_red	403912
FpXV_sqr	588
FpXXkX_FpXXk_divexact	1225
FpXXkX_FpXXk_divexact_s	1449
FpXXkX_FpXXk_divides_s	12628
FpXXk_FpX_div	588
FpXXk_FpX_div_i	238
FpXXk_content	3983
FpXXk_content_FpX	5789
FpXXk_divexact_i	287
FpXXk_divexact_s	6097
FpXXk_divides	3507
FpXXk_divides_i	4718
FpXXk_divides_s	141190
FpXXk_gcd_i	14182
FpXXk_primpart_FpX	1904
FpXXk_rec	1904
FpX_FpV_multieval	0
FpX_FpV_multieval_tree	30844
FpX_FpXM_qmul	17162
FpX_FpXQV_eval	416681
FpX_FpXQ_eval	793991
FpX_FpXV_multirem	0
FpX_FpXV_multirem_dbl_tree	31433
FpX_FpXV_multirem_tree	588
FpX_Fp_add	891349
FpX_Fp_add_shallow	0
FpX_Fp_div	614667
FpX_Fp_mul	5601447
FpX_Fp_mul_to_monic	138325
FpX_Fp_mulspec	5616019
FpX_Fp_sub	587909
FpX_Fp_sub_shallow	11146
FpX_Frobenius	460199
FpX_Laplace	590
FpX_Newton	523143
FpX_add	16406113
FpX_addmulmul	87863
FpX_center	313750
FpX_center_i	2245407
FpX_chinese_coprime	0
FpX_convol	994
FpX_deriv	1629836
FpX_digits	11403
FpX_disc	42
FpX_div_by_X_x	163344
FpX_divrem	14426052
FpX_divrem_Barrett	815573
FpX_divrem_Barrettspec	816319
FpX_divrem_basecase	65900488
FpX_divu	8610
FpX_dotproduct	61168
FpX_eval	959055
FpX_extgcd	1439047
FpX_extgcd_basecase	587169
FpX_extgcd_halfgcd	13757
FpX_extresultant	77
FpX_extresultant_basecase	24
FpX_fromNewton	11348
FpX_gcd	1035629
FpX_gcd_basecase	53060
FpX_gcd_check	814
FpX_get_red	1077623
FpX_halfgcd	973
FpX_halfgcd_all	16686
FpX_halfgcd_all_i	16546
FpX_halfres	106
FpX_halfres_basecase	33798
FpX_halfres_i	52758
FpX_halfres_split	18960
FpX_halfres_update	3749
FpX_halve	92631
FpX_integ	0
FpX_integXn	55575
FpX_invBarrett	5522
FpX_invBarrett_Newton	1494
FpX_invBarrett_basecase	3975
FpX_invLaplace	186
FpX_is_squarefree	715999
FpX_matFrobenius	31492
FpX_mul	26452215
FpX_mulhigh_i	115055
FpX_mulspec	9201360
FpX_mulu	1064116
FpX_neg	467195
FpX_normalize	1848821
FpX_powu	318914
FpX_recipspec	1638485
FpX_red	94513776
FpX_rem	71136546
FpX_rescale	179008
FpX_resultant	416964
FpX_resultant_basecase	3996
FpX_shift	984817
FpX_sqr	6684267
FpX_sub	14614174
FpX_subspec	15430488
FpX_valrem	254574
FpXk_gcd	595
FpXk_mul	1603
FpXk_red	4516967
FpXk_renormalize	72751
FpXk_sub	3718554
FpXn_div	6412
FpXn_exp	0
FpXn_expint	17263
FpXn_inv	6412
FpXn_mul	2564796
FpXn_mulhigh	59480
FpXn_recip	533996
FpXn_red	204530
FpXn_sqr	0
Fp_FpXQ_log	543343
Fp_FpX_sub	25594
Fp_issquare	1335844
Fp_neg_FpX	1025
Fp_red_FpX	21944
FqV_inv	0
Fq_ispower	70
Fq_issquare	1630801
Fq_log	2475941
RgXV_to_RgM_lg	415977
RgXXk_modXn	6496
RgXXk_shift	6496
RgX_blocks_RgM	415988
RgXk_var_lowest	16142
Rg_is_FpXk	0
Rg_to_FpXk	71897
ZX_lgrenormalizespec	1663119
Z_to_FpX	1726
_FpXQ_add	0
_FpXQ_easylog	455
_FpXQ_mul	1669955
_FpXQ_one	218870
_FpXQ_pow	282241
_FpXQ_rand	722
_FpXQ_red	59395
_FpXQ_sqr	5575662
_FpXQ_sub	52941
_FpXQ_zero	3360
_FpX_add	20062
_FpX_divrem	134778
_FpX_mul	372362
_FpX_one	0
_FpX_pow	35827
_FpX_red	0
_FpX_sqr	86997
_FpX_zero	0
bounded_order	4430
gc_chinese	588
gener_FpXQ	7023
gener_FpXQ_i	84000
gener_FpXQ_local	83963
get_FpXQ_algebra	10199
get_FpXQ_star	2849
get_FpX_algebra	0
get_FpX_red	85576400
matJ2_FpXM	8
matid2_FpXM	24
random_FpX	257005
to_Flx	44576110
to_Flxq	2146612

Generated by: LCOV version 1.16