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 - FlxqE.c (source / functions) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 95.0 % 932 885 Test Date: 2026-07-23 17:04:59 Functions: 95.7 % 92 88 Legend: Lines:     hit not hit

Function Name	Hit count
F3xq_ellcard	21042
F3xq_ellcard_naive	6237
F3xq_ellcardj	9240
Fl_ellheightabovefloor	154
Fl_ellj_trace	371
Fl_end13	371
Flx_next	64512
Flx_renormalize_ip	64512
FlxqE_Miller	17575
FlxqE_Miller_add	4409
FlxqE_Miller_dbl	46210
FlxqE_Miller_line	28972
FlxqE_add	0
FlxqE_add_slope	414410
FlxqE_changepoint	93775
FlxqE_changepointinv	1743
FlxqE_chord_update	4409
FlxqE_dbl	0
FlxqE_dbl_slope	752214
FlxqE_log	49
FlxqE_mul	7
FlxqE_neg	1060
FlxqE_neg_i	6742
FlxqE_order	1470
FlxqE_sub	0
FlxqE_tangent_update	46211
FlxqE_tatepairing	63
FlxqE_vert	68328
FlxqE_weilpairing	21
FlxqE_weilpairing_pre	14292
Flxq_ellcard	62759
Flxq_ellcard_Harley	35
Flxq_ellcard_Kohel	25032
Flxq_ellcard_Satoh	11165
Flxq_ellcard_Shanks	4774
Flxq_ellcard_i	62759
Flxq_ellcard_naive	903
Flxq_ellcardj	15826
Flxq_ellgens	14370
Flxq_ellgroup	22294
Flxq_ellj	57333
Flxq_ellj_to_a4a6	0
Flxq_ellpoint	5543
Flxq_elltwist	22834
Flxq_ffellcard	454
Flxq_kronecker	11240
FpM_FpXQV_bilinear	181258
FpM_FpXV_bilinear	181258
FpXC_powderiv	120862
RgE_to_FlxqE	1743
RgX_circular_shallow	76251
RgX_is_monic_ZX	392
Teichmuller_lift	10248
ZpXQ_frob	114016
ZpXQ_frob_cyc	76251
ZpXQ_norm_mul	32823
ZpXQ_norm_pcyc	11340
ZpXQ_norm_sqr	22715
ZpXQ_sqrtnorm	13965
ZpXQ_sqrtnorm_pcyc	11102
_FlxqE_add	404701
_FlxqE_dbl	722088
_FlxqE_mul	215795
_FlxqE_order	5543
_FlxqE_order_multiple	5543
_FlxqE_pairorder	14271
_FlxqE_rand	74593
_FlxqE_sub	6742
_lift_invd	60396
_lift_invl	84280
_lift_iter	60396
_lift_lin	23884
_teich_invd	20622
_teich_invl	29701
_teich_iter	20622
_teich_lin	9079
closest_lift	10317
ell_to_a4a6_F3xq	31549
ell_to_a4a6_Flxq	73874
fill_pols	25032
get_FlxqE_group	54
get_Kohel_polynomials	25032
get_norm	25067
get_trace_Robert	35
getc2	25032
lift_isogeny	25067
nonsquare_Flxq	22834
polisclass	399
random_F3xqE	77165
random_FlxqE	76955
random_FlxqE_pre	151548
zx_is_pcyc	25067

Generated by: LCOV version 2.0-1