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 30622-caa25a75db) Lines: 1976 2156 91.7 % Date: 2026-01-22 09:18:00 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	31928
FpV_invVandermonde	29486
FpV_polint	22
FpV_producttree	29500
FpV_roots_to_pol	92717
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	4021
FpXQ_autpow_msqr	42
FpXQ_autpow_sqr	4115
FpXQ_autpowers	1636
FpXQ_autsum	2446
FpXQ_autsum_mul	2732
FpXQ_autsum_sqr	2572
FpXQ_auttrace	434
FpXQ_auttrace_mul	360
FpXQ_auttrace_sqr	317
FpXQ_charpoly	15
FpXQ_conjvec	8
FpXQ_div	533286
FpXQ_inv	1042775
FpXQ_invsafe	1042775
FpXQ_issquare	401223
FpXQ_log	701305
FpXQ_matrix_pow	61958
FpXQ_minpoly	13477
FpXQ_mul	10778458
FpXQ_norm	363819
FpXQ_order	1814
FpXQ_pow	998608
FpXQ_pow_Frobenius	295239
FpXQ_powers	371540
FpXQ_powu	540805
FpXQ_red	17042968
FpXQ_sqr	6196944
FpXQ_sqrt	78673
FpXQ_sqrtl_spec	543
FpXQ_sqrtn	1222
FpXQ_sqrtn_spec	858
FpXQ_sumautsum	1266
FpXQ_sumautsum_msqr	1123
FpXQ_sumautsum_sqr	2264
FpXQ_trace	21067
FpXQ_transmul	7175
FpXQ_transmul_init	1660
FpXT_red	1657870
FpXT_sqr	7602
FpXV_FpX_fromdigits	4564
FpXV_chinese	588
FpXV_chinese_tree	588
FpXV_chinesetree	588
FpXV_factorback	23258
FpXV_invdivexact	588
FpXV_prod	288336
FpXV_producttree	588
FpXV_producttree_dbl	30087
FpXV_red	391210
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	29500
FpX_FpXM_qmul	17162
FpX_FpXQV_eval	390427
FpX_FpXQ_eval	719691
FpX_FpXV_multirem	0
FpX_FpXV_multirem_dbl_tree	30088
FpX_FpXV_multirem_tree	588
FpX_Fp_add	891790
FpX_Fp_add_shallow	0
FpX_Fp_div	614274
FpX_Fp_mul	5485400
FpX_Fp_mul_to_monic	136654
FpX_Fp_mulspec	5499970
FpX_Fp_sub	586678
FpX_Fp_sub_shallow	11146
FpX_Frobenius	442447
FpX_Laplace	590
FpX_Newton	463796
FpX_add	16381104
FpX_addmulmul	87863
FpX_center	310374
FpX_center_i	2093409
FpX_chinese_coprime	0
FpX_convol	994
FpX_deriv	1561866
FpX_digits	11403
FpX_disc	42
FpX_div_by_X_x	154947
FpX_divrem	13851838
FpX_divrem_Barrett	815574
FpX_divrem_Barrettspec	816318
FpX_divrem_basecase	63767779
FpX_divu	8610
FpX_dotproduct	61210
FpX_eval	943034
FpX_extgcd	1364296
FpX_extgcd_basecase	587149
FpX_extgcd_halfgcd	13757
FpX_extresultant	77
FpX_extresultant_basecase	24
FpX_fromNewton	11348
FpX_gcd	1030139
FpX_gcd_basecase	52994
FpX_gcd_check	799
FpX_get_red	1037003
FpX_halfgcd	977
FpX_halfgcd_all	16690
FpX_halfgcd_all_i	16550
FpX_halfres	106
FpX_halfres_basecase	33802
FpX_halfres_i	52762
FpX_halfres_split	18960
FpX_halfres_update	3749
FpX_halve	92694
FpX_integ	0
FpX_integXn	55575
FpX_invBarrett	5522
FpX_invBarrett_Newton	1494
FpX_invBarrett_basecase	3975
FpX_invLaplace	186
FpX_is_squarefree	711206
FpX_matFrobenius	27161
FpX_mul	25786375
FpX_mulhigh_i	115055
FpX_mulspec	9201255
FpX_mulu	1064116
FpX_neg	462209
FpX_normalize	1680307
FpX_powu	318342
FpX_recipspec	1638505
FpX_red	92385858
FpX_rem	69266216
FpX_rescale	158074
FpX_resultant	410354
FpX_resultant_basecase	3974
FpX_shift	925531
FpX_sqr	6389702
FpX_sub	14607147
FpX_subspec	15423458
FpX_valrem	225486
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	2564811
FpXn_mulhigh	59480
FpXn_recip	474647
FpXn_red	204530
FpXn_sqr	0
Fp_FpXQ_log	541876
Fp_FpX_sub	25543
Fp_issquare	1335844
Fp_neg_FpX	1025
Fp_red_FpX	21944
FqV_inv	0
Fq_ispower	70
Fq_issquare	1630801
Fq_log	2416481
RgXV_to_RgM_lg	389713
RgXXk_modXn	6496
RgXXk_shift	6496
RgX_blocks_RgM	389713
RgXk_var_lowest	16142
Rg_is_FpXk	0
Rg_to_FpXk	71897
ZX_lgrenormalizespec	1663107
Z_to_FpX	1726
_FpXQ_add	0
_FpXQ_easylog	469
_FpXQ_mul	1621784
_FpXQ_one	207134
_FpXQ_pow	282142
_FpXQ_rand	679
_FpXQ_red	59395
_FpXQ_sqr	5281438
_FpXQ_sub	52941
_FpXQ_zero	3360
_FpX_add	20062
_FpX_divrem	134778
_FpX_mul	364808
_FpX_one	0
_FpX_pow	35493
_FpX_red	0
_FpX_sqr	86660
_FpX_zero	0
bounded_order	3980
gc_chinese	588
gener_FpXQ	7029
gener_FpXQ_i	73340
gener_FpXQ_local	73303
get_FpXQ_algebra	10199
get_FpXQ_star	2807
get_FpX_algebra	0
get_FpX_red	83119595
matJ2_FpXM	8
matid2_FpXM	24
random_FpX	229015
to_Flx	42117853
to_Flxq	2009790

Generated by: LCOV version 1.16