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) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30842-de08e65e1b) Lines: 1467 1530 95.9 % Date: 2026-04-29 09:26:11 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296323
RgX_gtofp_bit	7048752
RgX_normalize1	35838
X2XP1	5990894
ZX_Uspensky	1313950
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15201
ZX_graeffe	5439
ZX_realroots_irred	48570
ZX_rescale2prim	2233901
ZX_sturm	6395
ZX_sturm_i	123073
ZX_sturm_irred	116678
ZX_sturmpart	1128345
ZX_to_ZiX	16495651
ZiX_sqr	99235827
_gen_nored	11195500
_gen_one	14470169
_gen_zero	325993
_intervalcmp	0
_mp_add	24660119
_mp_cmul	34751901
_mp_mul	4374454
_mp_sqr	6298084
_mp_sub	0
_sqrtnr	22594
a_posteriori_errors	537495
abs_update	8021483
abs_update_r	780170
all_roots	536396
append_clone	1616287
bkeval_single_power	5234832
check_ab	1178972
checkbound	2355073
checkvalidpol	267361
clean_roots	536440
cleanroots	231763
cmp_complex_appr	2241623
conformal_basecase	1406582
conformal_mapping	468820
conformal_pol	1406700
dblexp	6563162
dbllog2	303949899
dft	503373
dual_modulus	1014567
eval_rel_pol	13169655
fft	14196154
fft2	7462
findpower	41032635
fix_roots	537496
fix_roots1	398818
fujiwara_bound	2274092
fujiwara_bound_real	1407029
graeffe	49606741
homothetie	1613719
homothetie2n	9980080
homothetie_gauss	36566365
ind_maxlog2	904407
initdft	998346
isexactpol	240117
isexactscalar	934122
isreal	963795
isvalidcoeff	1231117
logmax_modulus	4459165
logmin_modulus	1617856
logmodulus	608286
logpre_modulus	608286
logradius	494972
lower_bound	41032550
mydbllog2i	226795949
mydbllog2r	57624536
mydbllogr	9565998
mygprec	63866108
mygprec_absolute	4344502
mygprec_special	537505
mygprecrc	215586578
mygprecrc_special	2181566
myshiftic	136093263
myshiftrc	35581247
newton_polygon	5521293
optimize_split	494973
parameters	494972
pol_to_gaussint	17628827
polgraeffe	14
polmod_to_embed	84
polrootsbound	27237
polrootsbound_i	27230
polsolve	166697
quicktofp	6987930
realroots	50627
refine_F	503365
refine_H	2464755
root_error	1914528
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297745
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495343
split_0_1	469195
split_0_2	469196
split_1	468823
split_2	494970
split_complete	1528179
split_fromU	494973
split_pols	166689
splitcauchy	166712
splitpoleval	5235060
tocomplex	1215997
update_radius	494973
usp	1126159

Generated by: LCOV version 1.16