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 - rootpol.c (source / functions) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 94.1 % 1561 1469 Test Date: 2026-09-29 17:04:20 Functions: 96.7 % 121 117 Legend: Lines:     hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
polgraeffe	0
scalepol2n	0
RgX_Graeffe	14
ZX_Uspensky_equal_yes	14
polgraeffe0	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5460
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15275
_sqrtnr	22878
polrootsbound_i	27800
polrootsbound	27807
RgX_normalize1	36408
ZX_realroots_irred	48670
realroots	50631
ZX_sturm_irred	117167
ZX_sturm_i	123562
polsolve	166990
split_pols	166990
splitcauchy	166990
solve_exact_pol	231621
cleanroots	231875
isexactpol	240229
roots_com	240229
roots_aux	240257
checkvalidpol	268043
QX_complex_roots	297216
_gen_zero	326083
fix_roots1	398956
conformal_mapping	469148
split_1	469148
split_0_1	469520
split_0_2	469520
logradius	495282
optimize_split	495282
parameters	495282
split_2	495282
split_fromU	495282
update_radius	495282
split_0	495654
dft	503722
refine_F	503722
all_roots	537403
clean_roots	537445
a_posteriori_errors	538504
fix_roots	538504
mygprec_special	538504
logmodulus	608842
logpre_modulus	608842
abs_update_r	781166
ind_maxlog2	904881
isexactscalar	934563
isreal	964430
initdft	999004
dual_modulus	1015251
usp	1127919
ZX_sturmpart	1129022
check_ab	1179653
tocomplex	1219425
isvalidcoeff	1235245
ZX_Uspensky	1315123
conformal_basecase	1407563
conformal_pol	1407682
fujiwara_bound_real	1408232
split_complete	1529812
homothetie	1614966
logmin_modulus	1618190
append_clone	1618836
root_error	1919307
mygprecrc_special	2185110
ZX_rescale2prim	2237709
cmp_complex_appr	2249869
fujiwara_bound	2276749
checkbound	2356436
refine_H	2466416
scalepol	4300734
mygprec_absolute	4356239
_mp_mul	4430508
logmax_modulus	4461259
bkeval_single_power	5250403
splitpoleval	5250403
newton_polygon	5526791
X2XP1	6001125
_mp_sqr	6349893
dblexp	6569557
quicktofp	7000089
RgX_gtofp_bit	7056221
abs_update	8028196
mydbllogr	9573902
homothetie2n	9988050
_gen_nored	11268048
eval_rel_pol	13181649
fft	14225881
_gen_one	14524760
ZX_to_ZiX	16457359
pol_to_gaussint	17642908
_mp_add	24942127
_mp_cmul	35116850
myshiftrc	35617220
homothetie_gauss	36603824
findpower	41065083
lower_bound	41065083
graeffe	49675103
mydbllog2r	58109553
mygprec	63983017
ZiX_sqr	99350206
myshiftic	136516058
mygprecrc	215750533
mydbllog2i	227091940
dbllog2	304789243

Generated by: LCOV version 2.0-1